scholarly journals Stratigraphy and depositional history of the Tornillo Group (Upper Cretaceous–Eocene) of West Texas

Geosphere ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 2206-2244 ◽  
Author(s):  
Thomas M. Lehman ◽  
Steven L. Wick ◽  
Heather L. Beatty ◽  
William H. Straight ◽  
Jonathan R. Wagner
Keyword(s):  
Upper Cretaceous ◽  
Depositional History ◽  
West Texas ◽  
History Of

Deciphering the geology of some Darriwilian–Sandbian (Ordovician) ‘ghost’ formations in the UK and North America using olistoliths in marine debris flows

2017 ◽  
Vol 155 (7) ◽  
pp. 1507-1522 ◽  
Author(s):  
STIG M. BERGSTRÖM ◽  
ANNALISA FERRETTI
Keyword(s):  
North America ◽  
Marine Debris ◽  
Carbonate Sediments ◽  
Ouachita Mountains ◽  
Depositional History ◽  
West Texas ◽  
History Of ◽  
Conodont Fauna ◽  
The Uk ◽  
Nw Europe

AbstractOlistostromes with calcareous olistoliths are rare components in the Ordovician successions in NW Europe and North America, having been described from only a small number of localities. One of the best exposed, but least known, is in the Garn Formation in coastal outcrops in Anglesey in northwestern Wales. Here, in the graptolite-bearing shales of the Garn Formation, there are numerous limestone olistoliths that are derived from an otherwise unknown ‘ghost’ formation whose original depositional site remains an enigma. These olistoliths contain a Baltoscandian type of conodont fauna that is otherwise unknown in Wales and England. It represents the Baltoniodus variabilis Subzone of the Amorphognathus tvaerensis Zone. Similar, but slightly older, conodont faunas are recorded from olistoliths in the Tweeddale Member of the Shinnel Formation in southern Scotland and in probable olistoliths of the Cobbs Arm Limestone in northeasternmost Newfoundland. Approximately coeval conodont faunas are present in calcareous olistoliths in the Woods Hollow Shale of West Texas and the Womble Shale in the Ouachita Mountains of Arkansas, USA. Lithological and conodont evidence indicates that the calcareous olistoliths were derived from carbonate sediments deposited in relatively shallow water. It is concluded that the study of ‘ghost’ formation olistoliths may provide otherwise unavailable but important data bearing on the marine depositional history of a particular region.

Stratigraphie du Cretace superieur et de l'Eocene inferieur dans la Chalosse de Montfort (Landes)

1946 ◽  
Vol S5-XVI (4-6) ◽  
pp. 385-397
Author(s):  
J. Cuvillier ◽  
J. Dupouy-Camet
Keyword(s):  
Special Reference ◽  
Upper Cretaceous ◽  
Stratigraphic Sequence ◽  
Depositional History ◽  
Lower Eocene ◽  
History Of ◽  
Vertical Variations

Abstract An account of the stratigraphic sequence and depositional history of upper Cretaceous and lower Eocene deposits of the Chalosse de Montfort area, Landes, France, with special reference to the lateral and vertical variations of facies of the lower Eocene strata.

Revised Upper Cretaceous and lower Paleogene lithostratigraphy and depositional history of the Jeanne d'Arc Basin, offshore Newfoundland, Canada

AAPG Bulletin ◽  
2003 ◽  
Vol 87 (9) ◽  
pp. 1459-1483 ◽  
Author(s):  
Mark E. Deptuck ◽  
R. Andrew MacRae ◽  
John W. Shimeld ◽  
Graham L. Williams ◽  
Robert A. Fensome
Keyword(s):  
Upper Cretaceous ◽  
Depositional History ◽  
Jeanne D'arc Basin ◽  
History Of ◽  
Jeanne D'arc ◽  
Lower Paleogene

Palynology and depositional history of the Paleocene? Thyra Ø Formation, Wandel Sea Basin, eastern North Greenland

2000 ◽  
pp. 21-49 ◽  
Author(s):  
Jens M. Lyck ◽  
Lars Stemmerik
Keyword(s):  
Upper Cretaceous ◽  
Depositional History ◽  
Original Series ◽  
Late Paleocene ◽  
History Of ◽  
North Greenland

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Lyck, J. M., & Stemmerik, L. (2000). Palynology and depositional history of the Paleocene? Thyra Ø Formation, Wandel Sea Basin, eastern North Greenland. Geology of Greenland Survey Bulletin, 187, 21-49. https://doi.org/10.34194/ggub.v187.5193 _______________ The Thyra Ø Formation in eastern North Greenland has been dated as Late Paleocene to possibly earliest Eocene based on its content of palynomorphs. The palynomorph assemblage is dominated by long ranging taxa and reworked Upper Cretaceous species. The Late Paleocene age of the formation is based on the occurrence of Cerodinium speciosum and Spinidinium pilatum. However, the presence of Cerodinium markovae, Spinidinium sagittula, and ?Ilexpollenites sp. suggests that the formation may range into the earliest Eocene.

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