Results 141 to 150 of about 365,863 (321)
Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil
Meteoritics &Planetary Science, EarlyView.Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta +9 more
wiley +1 more source
Hydrous Carbonatitic Liquids Drive CO2 Recycling From Subducted Marls and Limestones
Geophysical Monograph Series, Page 209-221., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Erwin Schettino, Stefano Poli
wiley +1 more source
Applied SciencesBased on drilling, core and seismic data, combined with the regional tectonic sedimentary evolution background, the sedimentary environment of the Triassic carbonate rocks in the Mangeshlak Basin was studied.
Fanyang Meng +4 more
doaj +1 more source
Bio‐mediated cementation of supratidal beach sediments associated with groundwater springs
Sedimentology, EarlyView.ABSTRACT The formation of beachrock, sensu stricto, via carbonate precipitation in the intertidal zone is widespread throughout the tropics and subtropics. While cementation of supratidal beach sediments has also been noted in several locations, it has received much less attention.
Thomas William Garner +1 more
wiley +1 more source
Publicación Electrónica de la Asociación Paleontológica Argentina, 2015 Cambrian/Ordovician trace fossil assemblages from the Balcarce Formation are described. In the Cabo Corrientes outcrops at the Atlantic coast, four sedimentary facies are distinguished as follows: a) Pebble Sandstone Facies with progradation surfaces and
Daniel G. Poire, Analía Del Valle
doaj
Shiyou shiyan dizhiThe unclear understanding of the sedimentary environment and facies of the Baoshi Formation in the Pingbei area of the Pinghu slope belt, Xihu Sag, East China Sea Basin, has restricted the evaluation of the Baoshi Formation reservoirs and source rocks in
Yiming JIANG +4 more
doaj +1 more source
Microbial mats in dinosaur ichnocoenoses
Sedimentology, EarlyView.ABSTRACT Until now, the significance of microbial mats in preservation of dinosaur tracks and in reconstructing the palaeoenvironment in which dinosaurs roamed was rarely studied. Dinosaur tracks are commonly found close to ancient aquatic bodies where moist sediment had once allowed footstep registration.
Nora Noffke +3 more
wiley +1 more source
地球与行星物理论评Strong diagenesis and reservoir heterogeneity as well as complex pore structure in the late stage of No. 4 structure in Nanpu sag make assessment of the petrophysical characteristics of its high-quality reservoir and evaluation of its effectiveness ...
Jingying Chen +4 more
doaj +1 more source
Sedimentology, EarlyView.ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris +9 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source