Results 21 to 30 of about 138,606 (361)

The impact of benthic microbial communities in sediment dispersion and bedform preservation: a view from the oldest microbially induced sedimentary structures in South America

open access: yesBrazilian Journal of Geology, 2022
The influence of microbial communities upon sedimentary dynamics is an issue of increasing significance. Over the last decades, studies have revealed a particular class of sedimentary structures and textures produced by the interaction among distinct ...
Lucas Veríssimo Warren   +5 more
doaj   +1 more source

Engineering the Cambrian explosion: the earliest bioturbators as ecosystem engineers [PDF]

open access: yes, 2017
By applying modern biological criteria to trace fossil types and assessing burrow morphology, complexity, depth, potential burrow function and the likelihood of bioirrigation, we assign ecosystem engineering impact (EEI) values to the key ichnotaxa in ...
Callow, Richard H. T.   +3 more
core   +1 more source

Marine influence in the Barreiras Formation, State of Alagoas, northeastern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2009
Tidal processes were important for deposition of the Barreiras Formation located in northern Brazil, while correlatable deposits in northeastern Brazil have been traditionally related to continental environments.
Dilce F. Rossetti, Ana M. Góes
doaj   +1 more source

The Transformation of Sediment Into Rock : Insights From IODP Site U1352, Canterbury Basin, New Zealand [PDF]

open access: yes, 2017
ACKNOWLEDGMENTS We thank the crew of the RV JOIDES Resolution for professional seamanship, excellent drilling, and the scientific support on board. GHB and SCG thank the Australia–New Zealand IODP Consortium (ANZIC), and KMM thanks the Consortium for ...
Browne, Greg H.   +8 more
core   +1 more source

Sedimentation of the Lower Cretaceous Xiagou formation and Its Response to Regional Tectonics in the Qingxi Sag, Jiuquan Basin, NW China [PDF]

open access: yes, 2014
Under the constraint of an isochronous sequence stratigraphic framework, sediment infill of the Xiagou Formation reflects the overall control of dynamic tectonic movements and episodic sedimentations in the Qingxi Sag.
Chen, Si   +5 more
core   +1 more source

The anatomy of exhumed river-channel belts: Bedform to belt‐scale river kinematics of the Ruby Ranch Member, Cretaceous Cedar Mountain Formation, Utah, USA [PDF]

open access: yes, 2020
Many published interpretations of ancient fluvial systems have relied on observations of extensive outcrops of thick successions. This paper, in contrast, demonstrates that a regional understanding of palaeoriver kinematics, depositional setting and ...
Cardenas, Benjamin T.   +7 more
core  

Origin of a sedimentary sequence on the north island of Todos Santos, B.C., Mexico

open access: yesCiencias Marinas, 1992
The Todos Santos Islands are located within Todos Santos Bay, Baja California. A small sedimentary sequence of about 160 m length and 18 m height is located on the north island.
AL Quintanilla-Montoya, F Suárez-Vidal
doaj   +1 more source

Study on the lithofacies of the second member of Tengger formation in Jiergalangtu of Erlian Basin [PDF]

open access: yesE3S Web of Conferences, 2020
Through analyzing coring well observation and in combination with drilling data log sheet and the analysis of the test data, combined with the regional sedimentary tectonic evolution background of the second member of Tengger formation in Jiergalangtu of
Daming Niu   +3 more
doaj   +1 more source

Impact of volcanism on the sedimentary record of the Neuquén rift basin, Argentina: towards a cause and effect model [PDF]

open access: yes, 2018
The analysis of volcano-sedimentary infill in sedimentary basins constitutes a challenge for basin analysis and hydrocarbon exploration worldwide. In order to understand the contribution of volcanism to the sedimentary record in rift basins, we study the
Abebe   +150 more
core   +1 more source

Lithofacies And Depositional Analysis Environment Of West Section Kolok Nan Tuo Village, Sawahlunto City, West Of Sumatera

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2018
Research areas were located in the west of Kolok Nan Tuo Village. Geographically this area is located at coordinates 00 ° 36'57,85 '' - 00 ° 37'56,89 '' latitude and 100 ° 42'10,08 '' 100 ° 43'47,28 " BT.
Catur Cahyaningsih   +3 more
doaj   +1 more source

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