References and Appedices final.PDF
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: References and Appedices final.PDF
References and Appedices final.PDF
TULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDFD D. REIMERS REIMERS RESEARCH HOUSTON.TEXASCONTENTSI.ABSTRACT ........................................ 1II.INTRODUCTION ................................... 1III.PREVIOUS STUDIES ._............................. 7IV.LOCATION OF SAMPLED SECTIONS.................. 11V.TECHNIQUES AND PROCEDURES....12VI. References and Appedices final.PDFRESULTS AND CONCLUSIONS ...................... 13VII.ACKNOWLEDGMENTS ................................ 18VIII.SYSTEMATIC PALEONTOLOGY ................References and Appedices final.PDF
....... 18IX.REFERENCES......................... .. . . . . . . . . 46PLATES 1-14ILLUSTRATIONS ................................. beginningon p. 19TULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDFcope and a scanning electron miscroscope. Twenty -seven species were identified, two of which are described as new. The nannoplankton distribution was used to correlate the Alabama Midway Group with standard Paleocene nannoplankton zonations resulting in the Pine Barren and McBryde members of the Cl References and Appedices final.PDFayton Formation being assigned to the Crucipỉacoỉithus tenuis zone, and the Porters Creek Clay and the Matthews Landing Member being assigned to the CReferences and Appedices final.PDF
yclococcolithina robusta zone. The nannoplankton distribution and abundances are related to the lithology and depositional environments of the Midway TULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDFy shallowwater deposits of the Naheola Formation are barren of nannoplankton.II. INTRODUCTIONThe Midway Group of Alabama consists of three formations (figure 1). These are, in order of stratigraphic sequence: (1) the Clayton Formation, which in central Alabama is divided into the lower Pine Barren M References and Appedices final.PDFember and the upper McBryde Limestone Member; (2) the Porters Creek Clay, present only in western Alabama, with the Matthew'S Landing Marl Member at tReferences and Appedices final.PDF
he top; and (3) the Naheola Formation, present only in central and western Alabama, divided into the lower Oak Hill Member and the upper Coal Bluff MaTULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDF(figures 2, 3 and 4). This section at Midway Landing was described by Smith as having a few feet of black clay, which seemed equivalent to that at Black Bluff on the Tombigbee River (Porters Creek Clay), overlying about ten feet of gray, argillaceous limestone (the McBryde Limestone) with the nautil References and Appedices final.PDFoidEDITORIAL COMMITTEE FOR THIS PAPER:2Tulane Studies in Geology and PaleontologyVol. 1’Western AlabamaCentral AlabamaEastern AlabamaFigure 1 - FormatReferences and Appedices final.PDF
ions and Members of the Midway Group in AlabamaEnclimatoceras. LaMoreaux and Toulmin (1953) described this Midway section as part of the McBryde LimesTULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDF dammed, only the uppermost claystone ledge is exposed.The Clayton Formation was named for exposures near Clayton, Barbour County, Alabama by Smith (1892). Exposures at the type locality, in a Central of Georgia Railroad-cut one mile east of Clayton, consist of approximately 12 feet of dense, crysta References and Appedices final.PDFlline, gray limestone underlain by a tan, clayey sand (figures 2 and 5). LaMoreaux and Toulmin (1953) described the Clayton in Wilcox County, Alabama,References and Appedices final.PDF
as consisting of about 140 feet of massive limestone with some basal sand. In extreme western Alabama the Clayton Formation consists of less than 20 TULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDFists of a sandy yellow, crystalline limestone containing TurritelUi alabamensis. The lower part of the member is a gray calcareous silt with induratetj ledges. In Wilcox County the Pine Barren Member has an estimated thickness of 125 feet (LaMoreaux and Toulmin, 1953).The McBryde Limestone Member wa References and Appedices final.PDFi named by MacNeil (1946) for exposures h roadcuts along Alabama Highway 21 Ù Wilcox County, approximately three milei west of McBryde Station. The stReferences and Appedices final.PDF
ation nt longer exists but exposures can be fount along Highway 21 at a locality 0.2 milt south of the intersection of Highway 21 ant Highway 28 in WiTULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDFhttps.7/khothuvien.iNo. 1Midway Calcareous Nannoplankton3Farther west it becomes more clayey and intertongues with the lower part of the Porters Creek Clay.The »P?.oir?rCreek Clay was named bySafford G864) for exposures west of Mid-dleton, Tennessee. The equivalent deposits in Alabama were originall References and Appedices final.PDFy called the Sucarnoochee Clay by Smith (in Smith and Johnson, 1887) from exposures alongSucarnoochee Creek in Sumter County, Alabama. The type localiReferences and Appedices final.PDF
ty of the Sucar-noochee Clay is Black Bluff on the Tombigbee River below its confluence with Sucarnoochee Creek (figures 2 and 6). In western Alabama,TULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVID References and Appedices final.PDFntTULANE STUDIES IN GEOLOGY AND PALEONTOLOGYVolume 19. Number 1July 31. 1986THE CALCAREOUS NANNOPLANKTON OF THE MIDWAY GROUP (PALEOCENE) OF ALABAMADAVIDGọi ngay
Chat zalo
Facebook