Janus - North Carolina Fossil Club
Transcription
Janus - North Carolina Fossil Club
NO FO NA H CAROLI RT SSIL CL UB Janus 2015 Summer Calendar July 19 NCFC Meeting – NCMNS, 11 West Jones Street, Raleigh. 1:30 pm, Level A conference room. Roll-out for Volume III: Fish and a report on collecting Topsail Island after the beach renourishment. September 20 NCFC Meeting – NCMNS, 11 West Jones Street, Raleigh. 1:30 pm, Level A conference room. Program TBA 26 Mini Fossil Fair – Rankin Museum, 131 W. Church St., Ellerbe, NC 9:00 - 4:00. Contact: Ruffin Tucker (704) 784-1672 or [email protected] The Fall collecting calendar will be in the next issue of Janus. President’s Note Summer is here with a vengeance and the heat is definitely ON! This spring was full of collecting opportunities and outreach. Hope everyone who wanted to had a chance to participate. On the dark side: The new Federal Regulation on collecting fossils on National Forest Lands went into effect on May 18, 2015 – see the article later in the newsletter – and it is a cautionary tale for fossil collecting everywhere. On the bright side: The Topsail Beach sand replenishment project is throwing up all kinds of neat things – also see article later in this issue. On the brightest side: Volume III, Fossil Fish has been released and the party is ON! Come to the July meeting on the 19th and celebrate with us! I encourage everyone to get out there and volunteer and try to do at least a little outreach this year. You don’t have to be an expert, in fact, you don’t have to know anything at all – just have a passion for fossils and off you go! Can’t wait to see you in the field or at an event! Happy Hunting, Linda What’s Inside John Timmerman has an article on shell collecting at the fabled Lee Creek Mine (SIGH!!). Ruffin Tucker reports on the Norwood Arbor Day Festival (page 5). On page 6 is a collection of photographs by Trish Kohler, devoted to the remarkable collecting trip to the Castle Hayne quarry this past April. President Linda McCall has an extensive analysis of recent legislation that seriously restricts fossil collecting in National Forest lands. Linda also has a report on the recent beach renourishment on Topsail Island which produced large numbers of some very scarce Oligocene fossils, including an undescribed species of brittle star. Pictures below, on page 8, and on the back cover. The Newsletter of the North Carolina Fossil Club www.ncfossilclub.org 2015 Number 2 rish Kohler, our Treasurer since 1987 (!!), has asked to step down. Trish has done an exceptional job in a relatively thankless, but nonetheless exceedingly important, position. She has kept our books accurately, with any discrepancy instantly resolved. The Club will just not be the same without her telling us at each meeting exactly how much (to the penny) is in the treasury. Please take the earliest opportunity to express to her your personal thanks for a job truly well-done. David Sanderson, our long-time trip leader to the Castle Hayne and Rocky Point quarries will be her replacement as of the Fossil Fair in November (when new officers and Board Members’ terms begin). T Ecphora tricostata (Martin, 1904) — Pungo River Formation. 6cm. Ecphora quadricostata (Say, 1824) — Yorktown Formation. 6cm. Rapana rapiformis (Born, 1778) — Recent, for comparison with Ecphora. 9cm. The Joys of Fossiling: at a North Carolina Phosphate Mine. By John R. Timmerman North Carolina and its beaches start many people along the road to a shell collecting hobby. But it can also stimulate an interest in fossil collecting. Fossil collecting has many advantages over collecting recent shells. The collector can obtain a large variety of species existing over millions of years in a relatively small area. Deposits representing deep and shallow water can be collected near each other and in a short time. And the fossils have lost most or all of their color, giving rise to a new kind of molluscan beauty: the lack of color serves to emphasize the fantastic sculpture or form of a given species. The appeal of the bold ribbing in a Chesapecten jeffersonius is hard to match in modern pectens. Fossil collecting has become a passion for me since deep water and tropical species are readily available without a great deal of travel. I recently visited the Texasgulf Phosphate Mine in North Carolina. It proved a perfect place for me to partake of the joys of fossil collecting. Several ages of deposits are present at the site, perhaps the best known of which is the Yorktown, considered to be early Pliocene in age. Pungo River, Chowan River and James City Formations are also found here (see chart). Pungo River is older than the Yorktown and Chowan River and James City Formations are younger. These deposits represent a variety of shallow ocean or coastal environments during a warmer time in the history of the earth than today’s climate. The environment is thought to have been similar to modem shallow sounds such as Chesapeake Bay and near-shore areas of open ocean. The presence of terrestrial mammal fossils indicates the proximity of dry land to these environments. Mollusks are common-to-abundant, as are marine vertebrates. Most of the fossils are from the Yorktown, Chowan, and James City Formations. From these deposits come such well-known molluscan fossils as Ecphora quadricostata and Chesapecten. Many of the fossils in this deposit are also common to other deposits north and south of the area, because at various times they were part of a continuous coastline. The Ecphoras, extinct by the middle Pliocene, are considered relatives of the modern Rapana. Close examination of the siphonal fasciole of the shell reveals a similar growth pattern between Ecphora and the modern Rapana. The thickness and number of the ribs varied from species to species. The shells consist of two layers of material. The outer layer, calcite, is translucent brown, Marvacrassatella kauffmani Ray, 1987 —James City Formation. 11cm. Fossils littering surface of spoil piles — mollusks and dead coral Chesapecten madisonius as found, Yorktown Formation Volutafusus typus Conrad, 1863 — James City Formation, 10 cm. GEOLOGIC AGES AND FORMATIONS Geologic Age Miocene Pliocene Pliocene Pleistocene Period of Age early - late early late early presenting a rather beautiful appearance, different from most other fossils of this deposit. The inside of the shell is lined with a thin opaque white layer of aragonite, but the aragonite layer is often leached away, because aragonite has an unstable nature. Ecphora tricostata, from the Miocene, had three distinct ribs as its name implies. Some specimens have weak fourth and fifth ribs. Since no soft tissues are available for study, as is the case with all fossils, definite speciation must be determined by shell structure and age of deposit from which they came. Occurring with Ecphora from the Miocene through the early Pliocene are the convex scallop shells known as Chesapectens. Some Chesapectens attained huge proportions, even growing to the size of dinner plates. In some cases several species coexisted in the same habitat. They reached their apex in both size and number of species during the early Pliocene, and they disappeared at the same time as the Ecphoras. Exact classification of different Chesapecten species is difficult due to poorly preserved internal structures such as muscle scars. The byssal notches and shape of the ribs have been used as guides for differentiation, but the number of ribs can vary within a given species. Other large pectens lived with the Chesapectens, including Argopecten eboreus and Placopecten clintonius, which is very similar to the modern Placopecten magellanicus. The Chowan River and James City Formations at this locale are similar in fauna to deposits in central Florida. Mollusks are more abundant in these deposits than in the Yorktown, but less plentiful than in similar-aged Florida deposits. Many mollusks in these strata are familiar to the Florida fossil collector, but some species have subtle variations from their Florida counterparts. In other instances, Florida species are absent here, just as there are fossils here that are not found in Florida. Volutofusus typus of the early Pleistocene is the sole volute from this deposit. Its shells are fairly common at Texas Gulf. In shape they are similar to modern Scaphellas, with a prominent protoconch. Their shells are coated with an overglaze similar to some West African Cymbiums. They grew quite large, with shells of 15 centimeters not uncommon. Millions of Years Ago 20 - 7 5 - 3.6 3.5 - 2.5 2.3 - 1.8 Formation Pungo River Yorktown Chowan River James City Epitonium fractum Dall, 1927 — James City Formation, 3.5 cm. Another giant found with the Voluta is Marvacrassatella kauffmani. In shape these bivalves are very similar to Eucrassatella but grew to an amazing 11 centimeters or more in diameter. These mollusks have been designated a guide fossil, a species that has been identified as being characteristic to a specific deposit or formation, and so a marker for that deposit or formation. Marvacrassatella kauffmani is characteristic to the James City Formation. Ecphora quadricostata is a guide for the Yorktown Formation. Does this mean that any time a collector finds a Marvacrassatella kauffmani, he can be sure he is collecting in the James City Formation: Not necessarily. One of the difficulties facing a beginning fossil collector is the phenomenon of erosion and redeposition. Just as fossils are being exposed by erosion along rivers, streams, Cross sections of three Chesapecten and ocean fronts today, taxa from the Yorktown Formation, so it happened in the past. a: C. madisonius (Say, 1824); B: Earlier fossils were eroded C. jeffersonius jeffersonius (Say, out of their original beds, 1824); C: C. jeffersonius septenarius mixed with new material (Say, 1824). The illustrated shell, C. of the period of erosion, jeffersonius, is the oldest of the three; perhaps with the remains of the others appeared about the time it animals living then as they disappeared. died and fell to the bottom, and the entire mixture was redeposited. This process is called reworking. Thus it is possible to find fossils of different ages in the same deposit. Guide fossils from two or more periods in a single deposit will indicate different ages of material that became mixed, a reworked deposit. It is even possible for the material from one deposit to be completely carried away by erosion. In such a situation there may be a vast period of time not represented in the strata in a given locale. (In a sense the waste piles from mining operations can be considered a man-made form of reworking.) Fossils in the phosphate mine deposits were often concentrated in a given area by water currents, just as modern shells are. Some Urosalpinx suffolkensis Gardner, 1948 — James City Formation. 3cm. Busycon concinnum Conrad, 1873 — James City Formation. 13cm. Pterorytis fluviana (Dall, 1903) — James City Formation. 5 cm. areas of a given sediment can be poor in fossils while others will be saturated. Chesapectens tend to occur like this. Many of them have barnacles, worm tubes and small oysters attached to their inner surfaces indicating death before burial. Thus they were more subject to being piled up by currents than living individuals would be. This is one of the most interesting aspects of fossil collecting: the way it enable the student to observe environmental effects of the past and their similarity to those of the present. REFERENCES: Geology and Paleontology of the Lee Creek Mine, North Carolina, II. Smithsonian Contributions to Paleobiology, #61. Clayton E. Ray, Editor, Smithsonian Institute Press, Washington, D.C. 1987. Fossil Collecting in North Carolina. Bulletin #89. By J. G. Carter, P. E. Gallagher, R. Enos Valone, and T. J. Rossbach. Dept. of Natural Resources and Community Development, Division of Land Resources Geological Survey Section, Raleigh, North Carolina, 1988. Heilprinia caloosaensis malcolmi Ray, 1987 — Formation uncertain 8. cm. Reprinted from American Conchologist, September, 1991 Norwood Arbor Day Festival The Norwood Fossil Fair was held on a cool and rainy Saturday, April 23, 2015. This was our 6th year for the NC Fossil Club outreach to this Piedmont community. We lost the part of the usual members of the club that joined us each year as well as the NC Museum of Natural Sciences display and staff to the NC Science Olympiad Finals held on the same date. This left Jonathan, Kathy and Arianna Fain and myself to set up fossil tables in the Norwood Town Hall. Normally we set up in a tent outside. We let Dr. James Bain and Mary Boulton have the tent (!0 x 20 ft.) for the Aurora material so they could work with the kids and have protection from the occasional rain. They could come inside when rain became to hard. The town had students from the high schools and present and retired teachers to help in shifts scheduled to assist fossil hunters from 10 am to 4 pm period with breaks and lunches. Many shark teeth were carried home. As you might imagine, the attendees were fewer than previous festivals. However, we were able to give them a good show. They are anxious for us to return next year. They fed us great barbecue at the Fire Station. The US Forest Service and a 20 ft. Smokey Bear were there along with jewelry, food. plants,bird houses for sale and live music on stage all day and into the night. Dr. Bain and tent Mary Boulton with mother of fossil hunter Federal Forestlands Fossil Collection Ruling and Why it Matters A recent ruling by the Federal Government has come to my attention that will affect all of us. The Federal Paleontological Resources Preservation Ruling went into effect May 18, 2015 and we should all be aware of the rules, regulations, repercussions and implications it holds for us and our hobby/avocation. 1) Basically it is designed to end amateur fossil collecting (of any kind) on all Federal Forest Lands effective May 18, 2015. 2) This ruling is SPECIFICALLY written to address fossil INVERTEBRATE collection. The 2009 Ruling already banned Vertebrate collecting. 3) The ruling will be extended to include BLM (Bureau of Land Management) lands soon and then applied it to ALL Federal lands. 4) While this may not appear to affect some clubs/societies in some states now, it DOES affect much of the collecting west of the Mississippi. 5) It has already affected us. We have a member who has collected on a site on Federal Forest Land in NC, and it is now illegal for him to do so. Now imagine these restrictions being pushed down to the state level – as they could be in the future if we do not hold the line now. So, please take the time to read and understand this rather long document. https://www.federalregister.gov/ articles/2015/04/17/2015-08483/paleontological-resourcespreservation As I read it, although the rule allows for “casual” collecting, the parameters are restrictive enough that it basically ends collecting by amateurs. Here are some excerpts from the actual bill: 5. The term casual collecting restates the definition contained in 16 U.S.C. 470aaa. To be considered casual collecting, the activity means all of the following: Collecting of a reasonable amount of common invertebrate or plant paleontological resources for non-commercial personal use, either by surface collection or the use of non-powered hand tools, resulting in only negligible disturbance to the Earth’s surface and other resources. The Department considers that in establishing the term “casual collection” rather than “amateur collection” or “hobby collection” or “recreational collection”, the Act intended that casual collection reflect the commonplace meaning of “casual”. The commonplace definition of casual includes the elements “happening by chance; not planned or expected”, “done without much thought, effort, or concern”, and “occurring without regularity” (“casual” Merriam-Webster.com. 2014. http://www. merriam-webster.com/dictionary/casual (4 March 2014)). Consequently, the Department considers that casual collecting would generally be happenstance without intentional planning or preparation. Development of criteria for reasonable amount and negligible disturbance reflects, in part, the view of casual collecting as an activity that generally occurs by chance without planning or preparation. Further, the Act has established that an individual engaging in casual collecting activity in accordance with applicable conditions, in an area which has not been closed to casual collection, does not require a permit or other approval from the Department. Consequently, it is clear that the lack of Department decision space concerning such casual collection performed by an individual reflects that the Act intended that reasonable amount and negligible disturbance criteria established for casual collecting would be below levels that would otherwise require an evaluation under the National Environmental Policy Act (NEPA). Collection of amounts and/or land disturbance at levels that would require a NEPA evaluation would require a permit. 13. The term negligible disturbance as used in the definition of casual collecting clarifies that casual collection of common invertebrate and plant fossils may only result in little or no change to the land surface and have minimal or no effect on other resources such as cultural resources and protected or endangered species. Disturbance caused by powered and/or large nonpowered hand tools would exceed the “negligible” threshold and would no longer be casual collection. 14. The term non-commercial personal use as used in the definition of casual collecting clarifies the types of use allowed under casual collection, and means uses other than for purchase, sale, financial gain, or research. Research, in the context of these regulations, is considered to be a structured activity undertaken by qualified individuals with the intent to obtain and disseminate information via publication in a peerreviewed professional scientific journal or equivalent venue, which increases the body of knowledge available to a scientific community. Common invertebrate and plant paleontological resources collected for research purposes is not personal use and would need to be authorized under a permit in accordance with §§ 291.13 through 291.20. Exchange of common invertebrate and plant paleontological resources among casual collectors would be permissible as long as such resources were collected in accordance with the Act and the final regulations. 15. The term non-powered hand tools as used in the definition of casual collecting clarifies the types of tools that can be used for the casual collecting of common invertebrate and plant paleontological resources, and means small tools that can be readily carried by hand, such as geologic hammers, trowels, or sieves, but not large tools such as full sized-shovels or pick axes. Larger tools are more likely to create disturbance that is greater than “negligible.” The tools must not be powered by a motor, engine, or other power source. 18. The term reasonable amount as used in the definition of casual collecting quantifies the maximum amount of common invertebrate and plant paleontological resources that could be removed from National Forest System lands. A person may remove up to 100 pounds in weight per calendar year, not to exceed 25 pounds per day. Development of this reasonable amount criterion reflects, in part, the view of casual collecting as an activity that generally occurs by chance without planning or preparation. And that’s just the start. Again - Imagine if these restrictions were at the State level. I believe it is time for all the Amateur/Avocational Fossil Organizations(Clubs/Societies) to come together and stand with one voice push back in any way possible to stop any MORE restrictions being imposed on our hobby/vocation, and possibly petition to loosen the restrictive wording of “casual collecting” in the current Federal law. To that end we need to think about setting standardized collecting rules and ethics for collecting (which most of us already have). And they need to be set high enough to get the buy-in of the professionals - because we will need them to push through any kind of legislation. Update I had a long and productive conversation with the head paleontologist of the Bureau of Land Management (BLM).The short version is this:1) These laws were enacted and intended to shut down the large scale commercial sale of fossils. 2) The current law makes provisions for three groups: 1 - Casual Collectors (mom and pop out for a walk and find a fossil - you can keep it) 2 - Professionals - get a permit; and 3 Commercial Dealers - You are out. What it fails to do is address our Amateur/Avocational Community. Maybe they didn’t know how many of us there or how important we are, who knows? 3) He agrees that the Forest Service wording was “unfortunate”, the BLM folks seem to be more open to the Amateur/Avocational community and they intend for their wording to be different. 5) Their wording will come out sometime this fall and there will be a 60 day comment period. 6) We should all be prepared to make constructive comments at that time - especially comments aimed at showing them how our community can assist BLM with outreach efforts, enforcing protection of sites, and documenting what’s out there. These are all things BLM is charged with doing that they don’t have the manpower to do but WE do. 7) BLM in turn would then either try to create a 4th category for us or re-word things to account for us collecting larger amounts, etc., etc. to use for outreach, etc., etc. To that end I will be asking all the clubs across the country to gather up the following data and send it to me. I am asking ya’ll to do the same. I can do a lot of them, but will need your help on #s, 2,3,4,7 (members published),8,9 (individuals),10 1) How many members our organization has. 2) How many outreach events we do a year (anything that involves the public) 3) How many people these efforts reach (you can do it by event, or just give me a total). 4) How many fossils you give away each year - estimate a number and a weight - that will help them in determining what we can be allowed to collect) 5) Approximately how many field trips do we run as a club a year. 6) Are any of them on Federal Land? If so, how many. 7) Does our club publish any paleo literature? What? Any members publish non-peer reviewed literature? If so, what? 8) Are any of your members peer-review published - who and how many times. 9) Any projects your club or it’s individuals work on with any professionals) 10) Donations made to Museums or Universities – and any that have been written up 11) Anything else relevant I haven’t thought to ask! These statistics are all intended to show the government how valuable and underutilized a resource we are and that we are a large enough, and important enough block to make concessions for. Please send them as soon as you can gather them - I know it might be difficult - we all just do this stuff - we don’t track it, but it is important now to know the figures. Fingers crossed everyone! Linda Topsail Beach Rocks! There are rocks all over the beach on North Topsail Island. Thirty million year old rocks to be precise. To say the sand replenishment project has gotten off to a “rocky” start would be an understatement. The rocks weren’t planned, and it seems that NO one likes them, not the homeowners, not the tourists, not the turtle lovers nor the environmentalists, but every cloud has a silver lining. It turns out someone DOES like the rocks on the beach. WE do! Topsail has always been known for its fossil shark teeth, and lots of folks come to collect them, but this is different. Most of the rock being dredged up is actually 30 million year old solidified sandy ocean bottom from the Oligocene age (River Bend Formation) and it’s full of usually rare or non-existent fossils. As an added bonus, when the slurry of sand and rock is pumped through the miles of pipe, the fossils are effectively blasted clean by the sand and come out looking incredibly pristine. So, it’s like having Thanksgiving, Christmas, New Years and your Birthday all rolled into one, AND you won the lotto. The variety of Oligocene fossils, includes echinoderms, oysters, barnacles, crustacean, brachiopods, bryozoan, bivalve and gastropod impressions as well as some bone material including casts of a primitive archaeocete whale brain case region of the skull, and several teeth in matrix – not to mention the shark teeth, horse teeth, mastodon tooth and misc. Pliocene-Pleistocene bone bits that are washing out as well. Many of the Oligocene echinoderms, barnacles and oysters appear to retain traces of their original color, mauve, purple and lavender on some of the echinoderms, red on the barnacles and gold stripes on the oysters, while a few crustacean arm sections show mottled color pattern retention. And how cool is that?! Prolonged exposure to sunlight causes the specimens to bleach white, tan or grey. Some of the specimens on the beach are in better condition than ones we currently have in our museums, so we will use them to upgrade our collections. Some are new to science and will have papers published to describe them. Studying these fossils gives us a unique window into a part of North Carolina’s ancient history that we didn’t know about before and adds another facet to the growing body of knowledge we have about our state. Understanding our past may be the key to our future, so next time you walk the beach, take a closer look at the rocks beneath your feet – they may be trying to tell you something. The project is supposed to end June 30. 2015, but fossils will be washing out of the sand for years to come. So, let’s all hit the beach! Linda North Carolina Fossil Club, Inc. President Vice President Immediate Past President Treasurer Secretary Membership Chairperson Editor, Janus Board (Founded 1977) Linda McCall James Bain Rick Bennett Jonathan Fain Trish Kohler Joanne Panek-Dubrock Mike Bruff Richard Chandler Mary Boulton (2016) Charlie Causey (2016) Joy Pierce Herrington (2015) Gustavo Pierangelini (2015) David Sanderson (2016) Libby Smalley (2016) Ruffin Tucker (2015) Diane Willis (2015) (512) 422-2322 (919) 479-2320 (919) 609-9205 (919) 518-1591 (919) 383-6328 (919) 362-6392 (919) 553-6925 (919) 851-2153 (704) 541-9397 (336) 685-4118 (919) 929-2661 (919) 886-1259 (919) 469-2812 (910) 520-3677 (704) 784-1672 (919) 967-1008 Colfax, NC Bahama, NC Raleigh, NC Raleigh, NC Durham, NC Raleigh, NC Clayton, NC Raleigh, NC Charlotte, NC Liberty, NC Chapel Hill, NC Raleigh, NC Cary, NC Wilmington, NC Concord, NC Chapel Hill, NC – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 2015 Membership Application - North Carolina Fossil Club Name(s) Address City, State, ZIP Phone(s) (Include Area Code) E-Mail Address Select One Type of Membership (Enclose check or money order for the indicated amount.) $20.00 Individual (new) $15.00 Individual (renewal) $25.00 Household (new) $20.00 Household (renewal) Children of NCFC members who are dependent minors and living at home may accompany parents on any trip EXCEPT PCS–Lee Creek or where otherwise noted. Memberships are effective from January through December of the year (or portion of the year) of the date of application. For example, persons joining in August will need to renew their membership 5 months later in January. The Fossil Club’s newsletter, JANUS, is mailed out four times a year and is available online for members. Please let us know how you’d like to continue receiving JANUS. If you choose to download it from the website, you will receive an email when a new one is published. I will download Janus from website (www.NCFossilClub.org) please continue to send a paper copy via US Mail NCFC Liability Statement The Undersigned hereby acknowledges his/her understanding that fossil collecting is an inherently dangerous activity which can result in serious bodily injury or death, and/or property damage and hereby confirms his/her voluntary assumption of the risk of such injury, death or damage. The Undersigned, in return for the privilege of attending field trips Related to the collection of and/or study of fossils, or any other event or activity conducted or hosted by the North Carolina Fossil Club (NCFC), hereinafter collectively and individually referred to as “NCFC Events”, hereby releases the NCFC, NCFC Board members and officers, NCFC Event leaders or organizers and hosts, landowners and mine or quarry operators from any and all liability claims resulting from injury to or death of the undersigned or his/her minor children or damage to his/her property resulting from any cause whatsoever related to participation in NCFC Events. The Undersigned agrees to comply with any and all rules and restrictions which may be communicated to the undersigned by the NCFC Event leader and/or landowner and mine or quarry operator and acknowledges that failure to comply will result in immediate expulsion from the premises. The Undersigned acknowledges that this release covers all NCFC Events and will remain in effect at all times unless or until it is revoked by written notice to the current President of the NCFC and receipt of such revocation is acknowledged. The Undersigned further attests to his/her intent to be legally bound by affixing his /her signature to this release. Name Signature Date Name Signature Date Mail To: North Carolina Fossil Club, P.O. Box 25276, Raleigh, NC 27611-5276 North Carolina Fossil Club P.O. Box 25276 Raleigh, NC 27611-5276 Maretia carolinensis, a previously exceedingly rare echinoid, washed out in bucketfuls from the Topsail Beach renourishment. (see page 8)
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