Overall, an Understanding of the Origin and AITKEN, J
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Enrico SCHWABE Zoologische Staatssammlung Muenchen
. , E. SCHWABE NOVAPEX 6 (4): 89-105, 10 décembre 2005 A catalogue of Récent and fossil chitons (MoUusca: Polyplacophora) Addenda Enrico SCHWABE Zoologische Staatssammlung Muenchen, Muenchhausenstrasse 2 1 D-81247 Muenchen, Germany [email protected] KEYWORDS. MoUusca, Polyplacophora, taxon list, bibliography ABSTRACT. This paper lists species-group names of Récent and fossil Polyplacophora (MoUusca) that were published after 1998 (for the Récent species) and 1987 (for the fossil species). A total of 171 species were since then introduced, of which 123 are attributed to valid fossil taxa and 48 to valid Récent taxa. The authorship and complète références are provided for each species-group name. INTRODUCTION Considerazioni suUa famiglia Leptochitonidae Dali, 1889 (MoUusca: Polyplacophora). III. Le species Taxonomic work is impossible without an overview of terziarie e quatemarie Europee, con note sistematiche the scientific names existing in the particular taxon e filogenetiche. - Atti délia prima Giornata di Studi group. Catalogues generally are a great tool to obtain Malacologici Centra lîaliano di Studi Malacologici such overviews, as they often summarize information (1989): 19-140 (: 79; pi. 26). otherwise hard to gather and master. Type locality: Pezzo, near Villa S. Giovanni (Reggio Of the nearly 2600 taxa introduced on species level Calabria prov.); in material of upper Pleistocene, but within the Polyplacophora, 368 fossils and 914 Récent presumably originated from adjacent deposits of lower species are considered as valid (closing date: Pleistocene of bathyal faciès [Pezzo, presso Villa S. 31/10/2005). Giovanni (RC); in materiale del Pleistocene superiore, In the past, excellent catalogues of species-group ma presumibilmente originato da contigui depositi del names in Polyplacophora were compiled by Kaas & Pleistocene inferiore di faciès batiale]. -
JEFFERSONIANA Contributions from the Virginia Museum of Natural History
JEFFERSONIANA Contributions from the Virginia Museum of Natural History Number 19 10 January 2009 Unusual Cambrian Thrombolites from the Boxley Blue Ridge Quarry, Bedford County, Virginia Alton C. Dooley, Jr. ISSN 1061-1878 Virginia Museum of Natural History Jeffersoniana, Number 19, pp. 1-14 Scientific Publications Series Virginia Museum of Natural History The Virginia Museum of Natural History produces five scientific Unusual Cambrian Thrombolites from the Boxley Blue publication series, with each issue published as suitable material becomes Ridge Quarry, Bedford County, Virginia available and each numbered consecutively within its series. Topics consist of original research conducted by museum staff or affiliated ALTON C. DOOLEY , JR. investigators based on the museum’s collections or on subjects relevant to Virginia Museum of Natural History the museum’s areas of interest. All are distributed to other museums and 21 Starling Avenue libraries through our exchange program and are available for purchase by Martinsville, Virginia 24112, USA individual consumers. [email protected] Memoirs are typically larger productions: individual monographs on ABSTRACT a single subject such as a regional survey or comprehensive treatment of an entire group. The standardized format is an 8.5 x 11 inch page with two Three unusual thrombolites were collected in June 2008 from the Late columns. Cambrian Conococheague Formation at the Boxley Materials Blue Ridge Quarry in Bedford County, Virginia. These specimens are isolated low domes Jeffersoniana is an outlet for relatively short studies treating a single with a thrombolitic core and a pustulate, stromatolitic outer layer. The two subject, allowing for expeditious publication. The standardized format is largest domes have a distinctive thickened rim around their margins. -
Message from the New Chairman
Subcommission on Devonian Stratigraphy Newsletter No. 21 April, 2005 MESSAGE FROM THE NEW CHAIRMAN Dear SDS Members: This new Newsletter gives me the pleasant opportunity to thank you for your confidence which should allow me to lead our Devonian Subcommission successfully through the next four years until the next International Geological Congress in Norway. Ahmed El Hassani, as Vice-Chairman, and John Marshall, as our new Secretary, will assist and help me. As it has been our habit in the past, our outgoing chairman, Pierre Bultynck, has continued his duties until the end of the calendar year, and in the name of all the Subcommission, I like to express our warmest thanks to him for all his efforts, his enthusi- asm for our tasks, his patience with the often too slow progress of research, and for the humorous, well organized and skil- ful handling of our affairs, including our annual meetings. At the same time I like to thank all our outgoing Titular Members for their partly long-time service and I express my hope that they will continue their SDS work with the same interest and energy as Corresponding Members. The new ICS rules require a rather constant change of voting members and the change from TM to CM status should not necessarily be taken as an excuse to adopt the lifestyle of a “Devonian pensioner”. I see no reason why constantly active SDS members shouldn´t become TM again, at a later stage. On the other side, the rather strong exchange of voting members should bring in some fresh ideas and some shift towards modern stratigraphical tech- niques. -
Shell Microstructures in Early Cambrian Molluscs
Shell microstructures in Early Cambrian molluscs ARTEM KOUCHINSKY Kouchinsky, A. 2000. Shell microstructures in Early Cambrian molluscs. - Acta Palaeontologica Polonica 45,2, 119-150. The affinities of a considerable part of the earliest skeletal fossils are problematical, but investigation of their microstructures may be useful for understanding biomineralization mechanisms in early metazoans and helpful for their taxonomy. The skeletons of Early Cambrian mollusc-like organisms increased by marginal secretion of new growth lamel- lae or sclerites, the recognized basal elements of which were fibers of apparently aragon- ite. The juvenile part of some composite shells consisted of needle-like sclerites; the adult part was built of hollow leaf-like sclerites. A layer of mineralized prism-like units (low aragonitic prisms or flattened spherulites) surrounded by an organic matrix possibly existed in most of the shells with continuous walls. The distribution of initial points of the prism-like units on a periostracurn-like sheet and their growth rate were mostly regular. The units may be replicated on the surface of internal molds as shallow concave poly- gons, which may contain a more or less well-expressed tubercle in their center. Tubercles are often not enclosed in concave polygons and may co-occur with other types of tex- tures. Convex polygons seem to have resulted from decalcification of prism-like units. They do not co-occur with tubercles. The latter are interpreted as casts of pore channels in the wall possibly playing a role in biomineralization or pits serving as attachment sites of groups of mantle cells. Casts of fibers and/or lamellar units may overlap a polygonal tex- ture or occur without it. -
Geologic Cross Section C–C' Through the Appalachian Basin from Erie
Geologic Cross Section C–C’ Through the Appalachian Basin From Erie County, North-Central Ohio, to the Valley and Ridge Province, Bedford County, South-Central Pennsylvania By Robert T. Ryder, Michael H. Trippi, Christopher S. Swezey, Robert D. Crangle, Jr., Rebecca S. Hope, Elisabeth L. Rowan, and Erika E. Lentz Scientific Investigations Map 3172 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Marcia K. McNutt, Director U.S. Geological Survey, Reston, Virginia: 2012 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1–888–ASK–USGS. For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: Ryder, R.T., Trippi, M.H., Swezey, C.S. Crangle, R.D., Jr., Hope, R.S., Rowan, E.L., and Lentz, E.E., 2012, Geologic cross section C–C’ through the Appalachian basin from Erie County, north-central Ohio, to the Valley and Ridge province, Bedford County, south-central Pennsylvania: U.S. Geological Survey Scientific Investigations Map 3172, 2 sheets, 70-p. -
Cambrian Substrate Revolution
Vol. 10, No. 9 September 2000 INSIDE • Research Grants, p. 12 • Section Meetings Northeastern, p. 16 GSA TODAY Southeastern, p. 18 A Publication of the Geological Society of America • Happy Birthday, NSF, p. 22 The Cambrian Substrate Revolution David J. Bottjer, Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, [email protected] James W. Hagadorn, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, [email protected] Stephen Q. Dornbos, Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, [email protected] ABSTRACT The broad marine ecological settings prevalent during the late Neo- proterozoic–early Phanerozoic (600–500 Ma) interval of early metazoan body plan origination strongly impacted the subsequent evolution and development of benthic metazoans. Recent work demonstrates that late Neoproterozoic seafloor sediment had well-developed microbial mats and poorly developed, vertically oriented bioturbation, thus producing fairly stable, relatively low water content substrates and a sharp water-sediment interface. Later in the Cambrian, seafloors with microbial mats became increasingly scarce in shallow-marine environments, largely due to the evolution of burrowing organisms with an increasing vertically oriented component to their bioturba- tion. The evolutionary and ecological effects of these substrate changes on Figure 1. Looping and meandering trace fossil Taphrhelminthopsis, made by a large Early Cambrian benthic metazoans, referred to as the bioturbator, on a bedding plane from Lower Cambrian Poleta Formation, White-Inyo Mountains, California. Such traces, consisting of a central trough between lateral ridges, occur in sandstones Cambrian substrate revolution, are deposited in shallow-marine environments. -
Stratigraphic Framework And
U.S. DEPARTMENT OF THE INTERIOR SCIENTIFIC INVESTIGATIONS MAP 2916 U.S. GEOLOGICAL SURVEY (SHEET 2 OF 2) Explanatory pamphlet accompanies map 82° 80° 78° 82° 80° 78° Table 1.—Wells used to construct cross section F–F '. Refer to figure 2 for well locations. Also shown are perforated intervals, initial production flow per day, and reservoir names. Lake Ontario [Reservoirs: C, “Clinton” sandstone; M, Medina sandstone; T, Tuscarora Sandstone. Oil and gas production terms: AF, after hydrofracturing; BO, barrels of oil; BW, barrels of water; MCFG, thousand cubic feet of gas; N, natural (no stimulation of reservoir); OH, open hole (no casing with perforations); P&A, plugged and abandoned; TA, temporarily abandoned; TO, trace of oil; TW, trace of water. Well that connects section F–F ' with section A–A' shown as 81, A–A' (54); number in parentheses refers to well 54 on section A–A' . A' Lake Ontario —, no data] A' Map American Township Date of Perforated or open hole Initial production flow Orleans Company Lease County/State Reservoirs no. Petroleum (7.5–min quadrangle) log run interval (depth in ft) of natural gas, oil, Niagara Institute no. and water (per day) Ontario Erie 1 34–089–22051 Southern Triangle Oil Co. No. 1 Swetnam Comm. Licking/Ohio Burlington 11–27–63 — P&A, 11–29–63; 1,200 MCFG, — N (from “Clinton” in nearby well No. 1 Houck, 6–30–1905) Lake Erie 2 34–089–22300 Lake Shore Pipeline Co. No. 1 Shipley Licking Burlington 12–13–65 — P&A, 12–12–65; 1,200 MCFG, — B N (from “Clinton” in nearby well No. -
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EVALUATION OF POTENTIAL STACKED SHALE-GAS RESERVOIRS ACROSS NORTHERN AND NORTH-CENTRAL WEST VIRGINIA ABSTRACT Jessica Pierson Moore1, Susan E. Pool1, Philip A. Dinterman1, J. Eric Lewis1, Ray Boswell2 Three shale-gas units underlying northern and north-central West Virginia create opportunity for one horizontal well pad to produce from multiple zones. The Upper Ordovician Utica/Point Pleasant, Middle Devonian Marcellus, and Upper Devonian Burket/Geneseo 1 West Virginia Geological & Economic Survey, 2 U.S. DOE National Energy Technology Laboratory construction of fairway maps for each play. Current drilling activity focuses on the Marcellus, with more than 1,000 horizontal completions reported through mid-2015. Across northern West Virginia, the Marcellus is 40 to 60 ft. thick with a depth range between 5,000 and 8,000 ft. Total Organic Carbon (TOC) REGIONAL GEOLOGY is generally 10% or greater. Quartz content is relatively high (~60%) and clay content is low (~30%). Reservoir pressure estimates STRUCTURAL CROSS-SECTION FROM HARRISON CO., OHIO TO HARDY CO., WEST VIRGINIA range from 0.3 to 0.7 psi/ft and generally increase to the north. Volumetric assessment of the Marcellus in this area yields preliminary NW SE 81° 80° 79° 78° 1 2 3 4 5 original gas-in-place estimates of 9 to 24 Bcf/mi2. OH WV WV WV WV Pennsylvania Figure 2.—Location of seismic sections, wells, and major basement Harrison Co. Marshall Co. Marion Co. Preston Co. Hardy Co. 34-067-20103 47-051-00539 47-049-00244 47-077-00119 47-031-00021 UTICA SHALE PLAY GR 41 miles GR 36 miles GR 27 miles GR 32 miles GR Westmoreland The Burket /Geneseo interval is approximately 15 to 40 ft thick across the fairway. -
Proterozoic Paleozoic Cambrian Ordovician Silurian Devonian
Approximate location of Burley No. 1 well Seismic Stratigraphic Extensional and Thrust Age West Formation or Group Name East Lithology Packages Orogenic Events Sheets Perm. Lower Upper Post-Pottsville rocks, undivided Pottsville Group and Middle post-Pottsville rocks Alleghanian orogeny Penn. Lower Pottsville Group Upper Greenbrier Limestone and Mauch Chunk Group Greenbrier Limestone Miss. Lower Berea Sandstone, Sunbury Shale, and Price Formation Venango Group Venango Group (Formation) Hampshire Formation and Riceville Formation Chagrin Shale Bradford Group Bradford Group Huron Mbr. of Greenland Gap Group the Ohio Shale Upper Salina sheet Acadian orogeny Java Formation Angola Shale Member Devonian West Falls Elk Group Formation Rhinestreet Shale Member Brallier Formation Elk Group Sonyea Formation Genesee Formation Harrell Shale Middle Tully Limestone, Hamilton Group, Marcellus Shale, and Onondaga Limestone Hamilton Group Lower Oriskany Sandstone and Helderberg Group Upper Salina Group (includes salt beds) Salina Group, Tonoloway Limestone, and Wills Creek Formation and Wills Creek Formation Salina Group Paleozoic Lockport Dolomite and Keefer Sandstone McKenzie Limestone and Keefer Sandstone Silurian Rose Hill Formation Lower Reedsville- Tuscarora Sandstone Taconic orogeny Martinsburg Juniata Formation Juniata Formation sheet Oswego Sandstone Upper Reedsville Shale (Utica Shale at base) Reedsville Shale Trenton Limestone Trenton Limestone Black River Limestone Middle Ordovician Knox unconformity Beekmantown Group Beekmantown Group ? Passive continental Lower Rome- margin modified Waynesboro Upper sandstone member of the Copper Ridge Dolomite of the Knox Group by Rome trough sheet Upper extension Copper Ridge Dolomite of the Knox Group Knox Group and Middle pre-Knox rocks Conasauga Group and Rome Formation Cambrian Lower Autochthonous Grenvillian basement Grenvillian Grenvillian basement basement Proterozoic Figure 3.--Correlation chart of Paleozoic and Proterozoic rocks in the study area and associated thrust sheets. -
In Weight Percent
Bass Islands Dolomite Keyser Limestone (lower) and Salina Group Keyser Limestone (lower) and Salina Group Big Mountain Shale through Tonoloway Limestone Bass Islands Dolomite Bass Islands Dolomite Bass Islands Dolomite Bass Islands Dolomite Bass Islands Dolomite and Camillus Shale Bass Islands Dolomite and Camillus Shale Bass Islands Dolomite and Camillus Shale Bass Islands Dolomite and Camillus Shale Bass Islands Dolomite through Salina Group Bass Islands Dolomite and Salina Group Bass Islands Dolomite and Salina Group Bass Islands Dolomite and Salina Group Bass Islands Dolomite through Tonoloway Limestone Bass Islands Dolomite through Tonoloway Limestone Bass Islands Dolomite and Camillus Shale Keyser Formation Keyser Formation and Camillus Shale Keyser Limestone (lower) through Wills Creek Formation Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Camillus Shale Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Syracuse Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation Vernon Formation -
Xsec A-A Sht1of2 Layout FINAL V
U.S. DEPARTMENT OF THE INTERIOR SCIENTIFIC INVESTIGATIONS MAP 3425 U.S. GEOLOGICAL SURVEY (SHEET 1 OF 2) Explanatory pamphlet accompanies map A Ontario Allegheny Lowlands Plateau province province SEVERNE WATKINS-BEAVER LODI POINT FIRTREE DAMS ALPINE VAN ETTEN ANTICLINE ANTICLINE ANTICLINE ANTICLINE ANTICLINE ANTICLINE GLENORA SYNCLINE UNNAMED COHOCTON CORBETT POINT ENFIELD CAYUTA SYNCLINE SYNCLINE SYNCLINE SYNCLINE SYNCLINE Bend in section Bend in section Bend in section New York W SE Oatka Genesee NW SE Canisteo NW SW Pennsylvania Black Creek River Canaseraga River Tuscarora Creek Creek Creek FEET MILES 0 10 20 30 40 50 60 70 80 90 3,000 1 2 3 4 5 6 William Duchscherer, Jr. E.F. Blair and Associates NYS Natural Gas Company E.F. Blair and Associates Bowdoin Storage Service Inc. NYS Natural Gas Company No. 1 J. Klotzbach No. 1 L. Tyler No. 1 Albert McClurg No. 1 Arthur N. Kennedy No. 1 Hubbard No. 1 Robert Olin API No. 31-037-05117 API No. 31-037-04593 API No. 31-051-04552 API No. 31-051-04630 API No. 31-101-21496 API No. 31-101-03924 Genesee Co., New York Genesee Co., New York Livingston Co., New York Livingston Co., New York Steuben Co., New York Steuben Co., New York Perrysburg Formation Dunkirk Dunkirk Shale Shale 2,000 Member Wiscoy Sandstone Member Java Perrysburg West River Shale, Nunda Wiscoy Sandstone Member Formation Formation Genundewa Sandstone Member unnamed Pipe Creek 0 Pipe Creek shale member Limestone, Penn Member Shale Member Shale Member Perrysburg Yan Shale, and rmation Formation 0 Dun West River Shale, Java Fo kirk -
Unraveling the Central Appalachian Fold-Thrust Belt, Pennsylvania: the Power of Sequentially Restored Balanced Cross Sections for a Blind Fold-Thrust Belt
Unraveling the central Appalachian fold-thrust belt, Pennsylvania: The power of sequentially restored balanced cross sections for a blind fold-thrust belt Peter B. Sak1, Nadine McQuarrie2,*, Benjamin P. Oliver2,*, Natasha Lavdovsky2, and Margaret S. Jackson1,* 1Department of Earth Sciences, Dickinson College, Carlisle, Pennsylvania 17013, USA 2Department of Geosciences, Princeton University, Princeton, New Jersey 08540, USA ABSTRACT Anticlinorium, the northernmost structure of example of a blind thrust system. At its north- the fold-thrust belt that cuts upsection from ernmost end, the fold-thrust belt sweeps east- We present a kinematic model for the the Cambrian Waynesboro Formation to the ward, creating the broad arc of the Pennsylvania sequential development of the Appalachian Silurian Salina décollement. Because the fault salient (Fig. 1). Although previous research in fold-thrust belt (eastern U.S.) across a clas- that cores the Nittany Anticlinorium can only the central Appalachians has made considerable sic transect through the Pennsylvania salient. facilitate 10 km of shortening on the plateau, progress toward quantifying how shortening New map and strain data are used to create an early history of Appalachian Plateau LPS is distributed among microscopic (e.g., Smart a balanced geologic cross section from the in Silurian and younger rocks is required to et al., 1997; Thorbjornsen and Dunne, 1997), southern edge of the Valley and Ridge Prov- balance the section. We propose that the addi- mesoscopic (e.g., Smart et al., 1997; Hogan