Regional upper Albian–lower Cenomanian sequence boundaries, Texas Comanche shelf: Is timing related to oceanic tectonics?

Scott, Robert W.; Campbell, Whitney; Diehl, Brian; Edwards, W.; Altintas, Damla Gargili; Harlton, K.; Hojnacki, Rachel; Lai, Xin; Porter, Allison; Rush, N; Tan, Xibin; Wang, Y.

doi:10.1016/j.cretres.2019.02.007

Cited by 4 publications

(1 citation statement)

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“…There is a widespread view that the transition from limestone-dominated to clay-dominated facies is coincident with the Albian−Cenomanian boundary, and represents a major flooding surface overlying a sequence boundary across the Gulf coast region (Al SB Wa6; Scott et al 2019) and in the Agadir Basin (e.g., Essafraoui et al 2015). However, the present work demonstrates that the transition to clay-dominated sedimentation in the Agadir Basin commenced significantly earlier than in the Gulf Coast of North America, probably within the Pervinquieria (Subschloenbachia) rostrata Zone, and predates the Albian-Cenomanian boundary by approximately 1 myr (Gale et al 1996(Gale et al , 2011.…”

Section: Correlation Between the Agadir Basin And Central Texasmentioning

confidence: 99%

Acta Geologica Polonica

Gale

2019

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Successions exposed in the Agadir Basin (upper Albian to middle Turonian), in the Anti-Atlas (lower Turonian) in Morocco and in central Tunisia (Cenomanian–Turonian) yield abundant microcrinoids of the family Roveacrinidae, which are described and assigned to 32 species and formae, in ten genera. The following new taxa are described: Fenestracrinus gen. nov. with the type species F. oculifer sp. nov., Discocrinus africanus sp. nov., Styracocrinus rimafera sp. nov., Lebenharticrinus quinvigintensis sp. nov., L. zitti sp. nov., Euglyphocrinus cristagalli sp. nov., E. jacobsae sp. nov., E. truncatus sp. nov., E. worthensis sp. nov., Roveacrinus gladius sp. nov., R. solisoccasum sp. nov. and Drepanocrinus wardorum sp. nov. In addition, the new subfamily Plotocrininae is erected. The stratigraphical distribution of the taxa in two important localities, Taghazout in the Agadir Basin (Morocco) and Sif el Tella, Djebel Mhrila (central Tunisia), is provided. The faunas from the uppermost Albian and lowermost Cenomanian of the Agadir Basin are nearly identical to those recorded from central Texas, USA, some 5,300 km away, and permit a detailed correlation (microcrinoid biozones CeR1 and CeR2) to be established across the southern part of the Western Tethys, independently supported by new ammonite records. For the middle and upper Cenomanian, rather few detailed records of microcrinoids are available elsewhere, and the North African record forms the basis for a new zonation (CeR3–CeR6). The distribution of Turonian Roveacrinidae in North Africa is evidently very similar to that described in the Anglo-Paris Basin, and zones TuR1–3, TuR9, 10 and 14 are recognised for the first time in the Tethys.

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Section: Correlation Between the Agadir Basin And Central Texasmentioning

confidence: 99%