Results 121 to 130 of about 10,069 (268)

Recognition of fossil keratose sponges in carbonates using petrographic and machine‐learning classification

open access: yesSedimentology, EarlyView.
ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee   +2 more
wiley   +1 more source

Paleogeographic reconstructions of Jurassic strata of Western Siberia [PDF]

open access: yesНефтегазовая геология: Теория и практика
Based on the integration of geological and geophysical data, the facies and sedimentation environments of the Jurassic strata of Western Siberia were determined.
Shimanskiy V.V.   +9 more
doaj  

Juruá Orogeny: Brazil and Andean Countries

open access: yesBrazilian Journal of Geology
Seismic data from Petrobras (Brazilian state-owned petroleum company) show wide deformation and many reverse faults throughout the Solimões and Acre basins of northern Brazil. This deformation was observed for the first time in the Juruá River in 1976 in
Mario Vicente Caputo
doaj   +1 more source

Diagenetic controls on porosity evolution and pore type organisation in microporous carbonate rocks: Evidence for mesogenetic porosity formation

open access: yesSedimentology, EarlyView.
ABSTRACT Microporous carbonate rocks typically record complex diagenetic histories driven by microbial activity and fluid interactions within multiple diagenetic environments. The relative roles of meteoric and burial diagenetic processes in pore evolution remain debated, particularly within Cretaceous carbonate systems of the Middle East, as does the ...
Hugues Bitault   +5 more
wiley   +1 more source

Environmental controls on the distribution of neoselachian sharks and rays within the British Bathonian (Middle Jurassic).

open access: yes, 2003
Extensive sampling from a range of facies within the Bathonian (Middle Jurassic) of southern England has allowed the palaeoenvironmental distribution of a number of taxa of neoselachian sharks and rays to be assessed.
Underwood, Charlie J.   +1 more
core   +1 more source

A giant complex of injected deep-water sands: The Upper Jurassic Hareelv Formation of East Greenland

open access: yes, 2004
Upper Jurassic, Hareelv, East ...
Surlyk, Finn, Noe-Nygaard, Nanna
core  

The first elateroid beetles (Coleoptera: Polyphaga: Elateroidea) from the Upper Jurassic of Australia

open access: yes, 2016
Oberprieler, Rolf G., Ashman, Lauren G., Frese, Michael, Ślipiński, Adam (2016): The first elateroid beetles (Coleoptera: Polyphaga: Elateroidea) from the Upper Jurassic of Australia. Zootaxa 4147 (2): 177-191, DOI: http://doi.org/10.11646/zootaxa.4147.2.
Ashman', Lauren   +9 more
core   +1 more source

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