Results 61 to 70 of about 1,389 (158)
THE APTIAN STRATIGRAPHY OF SOUTHERN TUARKYR (NW TURKMENISTAN, CENTRAL ASIA)
Rivista Italiana di Paleontologia e Stratigrafia, 1999 The ammonite successions of Turkmenistan, particularly those of the Greater Balkhan and Tuarkyr areas, are considered references for the Aptian Stage. Six sections across the uppermost Barremian - basal Upper Aptian interval were studied in the Tuarkyr ...
FABRIZIO CECCA +2 more
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Geologica Acta, 2012 Major global palaeobiologic and palaeoenvironmental changes occurred during the Early Aptian. Precise dating and timing of the different events is crucial to determine possible cause-effect relationships between them.
J.A. MORENO BEDMAR +8 more
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Carnets de Géologie, 2008 More than 2,200 pyritized ammonites of the Superfamily Phylloceratatoidea have been collected in consonance with the scale of the ammonite zonation of the expanded Marnes Bleues Fm in the Vocontian Basin (SE France).
Joly Bernard, Delamette Michel
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Paleo-humidity changes in a tropical Aptian continental to transitional system: a case study from the Araripe Basin, Northeastern Brazil [PDF]
Brazilian Journal of GeologyAlthough many paleogeographic reconstructions depict equatorial Brazil as being predominantly arid during the Aptian, studies using palynomorphs suggest climatic fluctuations between humid and arid phases.
Marcos Antonio Batista dos Santos Filho +10 more
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Biostratigraphy of Lower Cretaceous from Selected Borehole in central Iraq
Academic Science Journalتكوين سرمورد هو تكوين مهم تم ترسيبه في شمال ووسط العراق الطباشيري السفلي. تمت دراسته لأغراض الرسم الطبقي الحيوي في قسمين تحت السطح في آبار حقل نفط تكريت: TK3 و TK5 في حكومة تكريت. يُعرف التكوين بأهميته وقد تمت دراسته على نطاق واسع من قبل الباحثين. تشكيل
Luay S. Shakir, Anwar K. Mousa
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Carnets de Géologie, 2007 In the Lower Aptian historical stratotype area (Cassis-La Bédoule, SE France), a geochemical study of the Gargasian (Middle Aptian) marl-limestone alternations of the La Marcouline quarry complements data already obtained from Bedoulian (Early Aptian ...
TRONCHETTI Guy +5 more
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Microfacies of a Lower Cretaceous marine successions in Cerro Las Conchas, Sonora, Mexico
Revista Mexicana de Ciencias Geológicas, 2019 The upper Aptian-middle Albian marine sequence exposed in the Cerro Las Conchas is clearly upside down, being the middle Albian rocks in the topographic base of the sequence, while the upper Aptian is in the upper part of the section.
Rogelio Monreal-Saavedra
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The Cogollo Group and the oceanic anoxic events 1a and 1b, Maracaibo basin, Venezuela
Brazilian Journal of GeologyCarbonates of Cogollo Group (Apón, Lisure and Maraca formations) constitute the broader calcareous platform system originated during Aptian and Albian of Cretaceous in north-western South America, Maracaibo Basin, Venezuela.
José Alejandro Méndez Dot +3 more
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Geologica Acta, 2016 A new benthic foraminifer is described as Glomospirella cantabrica n. sp. from several sections of the upper Aptian Reocín Formation and one occurrence from the lowermost Albian Las Peñosas Formation of Cantabria (northern Spain). It represents a rather
F. SCHLAGINTWEIT, I. ROSALES, M. NAJARRO
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Speculative petroleum systems of the Punta del Este Basin (offshore Uruguay)
Brazilian Journal of Geology: The Uruguayan continental margin was generated as the result of the breakup of Gondwana and, later, the opening of the South Atlantic Ocean, which began in the Jurassic.
Ethel Morales +6 more
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