نتایج جستجو برای: siliciclastic sequences

تعداد نتایج: 212703  

Journal: :Marine and Petroleum Geology 2023

To assess the influence of growing salt structures on facies distribution, stratal pattern, and thickness trends, this paper provides tectonostratigraphic framework outstandingly exposed Cotiella minibasins (South-Central Pyrenees, Spain). Based detailed analysis field cross-sections, our results showcase syn-halokinetic upper Coniacian-lower Santonian infill (1.5–3 km thick) records four shall...

اصلانی, سهیلا , جهان پناه, علیرضا , صمیم بنی هاشمی, حمیدرضا , محبوبی, اسداله , موسوی حرمی, رضا ,

Siliciclastic sediments of the Cheleken Series (Lower to Middle Pliocene) are exposed along the northern flank of Elburz Mountain Range. The goal of this study is to identify the clay mineral type in these siliciclastic sediments in Mazandaran and Golestan regions, because this can help in the prediction of drilling mud type that can be used. 23 samples have been collected from Neka, south of G...

2014

PROLOGUE This resubmission has benefited from constructive input by 8 mail reviewers, a panel summary, and NSF feedback (fall 2011). In response, we amplify three issues: 1) 3D imaging will detect nearshore features (e.g., meandering rivers, estuary complexes, lagoons/barrier islands, incised shelf valleys, etc.) that can be tied to IODP Exp313 sites M27-M29; mapping these features and associat...

2015
Daoliang Chu Jinnan Tong Haijun Song Michael J. Benton David J. Bottjer Huyue Song Li Tian

Wrinkle structures in rocks younger than the Permian-Triassic (P-Tr) extinction have been reported repeatedly in marine strata, but rarely mentioned in rocks recording land. Here, three newly studied terrestrial P-Tr boundary rock succession in North China have yielded diverse wrinkle structures. All of these wrinkles are preserved in barely bioturbated shore-shallow lacustrine siliciclastic de...

2014
Amany G. Taher

The coastal sabkha in Ras Gemsa, Red Sea coast with its colonizing microbial mats and biofilms was investigated. The sabkha sediments consist mainly of terrigenous siliciclastic material accompanied by the development of evaporites. Halite serves as a good conduit for light and reduces the effect of intensive harmful solar radiation, which allows microbial mats to survive and flourish. The micr...

2006
RANDALL B. IRMIS DAVID K. ELLIOTT

The taphonomy of assemblages of disarticulated remains of marine vertebrates is not well studied. Examination of a Middle Pennsylvanian chondrichthyan assemblage from Kohl’s Ranch, Naco Formation, central Arizona, contributes to knowledge of such assemblages and reveals a complex taphonomic history. This vertebrate assemblage is restricted to two thin horizons associated with a concentration of...

Journal: :Journal of African Earth Sciences 2021

This paper concerns the sedimentary successions deposited in Mandawa Basin after separation of East and West Gondwana during subsequent southwards drift Madagascar Late Jurassic to Early Cretaceous times. The aim this study was provide more specific details on sedimentation report mineralogical petrographical characteristics less well documented successions, namely Kipatimu, Mitole Nalwehe form...

Journal: :Palaeobiodiversity and Palaeoenvironments 2021

Abstract The Kimmeridgian Alcobaça Formation of the Lusitanian Basin forms a mixed carbonate–siliciclastic unit between basinal deposits Abadia Formation, and fluvial–terrestrial strata Lourinhã Formation. This study presents >2.5 km detailed logs nine outcrop sections in its type region. Eight these encircle Caldas da Rainha Diapir, which was prominent, emergent, passive salt diapir during ...

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