Stratigraphic sections and thickness maps of Lower Cretaceous and non-marine Jurassic rocks of central Wyoming

10.3133/oc13 ◽  
1945 ◽  
Keyword(s):  
Lower Cretaceous ◽  
Jurassic Rocks

Relations of Lower Cretaceous and Upper Jurassic Rocks, Four Corners Area, Colorado

AAPG Bulletin ◽  
1959 ◽  
Vol 43 ◽  
Author(s):  
E. B. Ekren (2), F. N. Houser (2)
Keyword(s):  
Lower Cretaceous ◽  
Upper Jurassic ◽  
Four Corners ◽  
Jurassic Rocks

Stratigraphy of Georges Bank Basin: interpreted from seismic correlation to the western Scotian Shelf

1977 ◽  
Vol 14 (10) ◽  
pp. 2274-2283 ◽  
Author(s):  
John A. Wade
Keyword(s):  
Lower Cretaceous ◽  
Upper Cretaceous ◽  
Georges Bank ◽  
Seismic Profiles ◽  
Scotian Shelf ◽  
Entire Area ◽  
Reflection Seismic ◽  
Northern Half ◽  
Southern Half ◽  
Jurassic Rocks

Based on the interpretation of reflection seismic profiles, five major reflecting horizons are correlated from the southwestern Scotian Shelf to Georges Bank. The Mesozoic–Cenozoic stratigraphy of Georges Bank Basin is interpreted to be similar to, but thicker than, the LaHave Platform and consists of 200 m of Tertiary and younger strata, 1000 m of Upper Cretaceous, 600 m of Lower Cretaceous, and 6300 m of Jurassic rocks. The post-Lower Cretaceous facies are interpreted to be clastic across the entire area, while the pre-Upper Cretaceous facies are interpreted to be predominantly clastic in the northern half and predominantly carbonates in the southern half of Georges Bank Basin.

scholarly journals Stratigraphy, tectonics and palaeogeography of the Jurassic sediments of the areas north of Kong Oscars Fjord, East Greenland

1977 ◽  
Vol 123 ◽  
pp. 1-56
Author(s):  
F Surlyk
Keyword(s):  
Lower Cretaceous ◽  
Shelf Area ◽  
Land Area ◽  
East Greenland ◽  
Geographical Society ◽  
The North ◽  
Jurassic Rocks ◽  
Early Late ◽  
Upper Volgian

The lithostratigraphic scheme currently in use for the Jurassic rocks of the Jameson Land area in East Greenland is extended northwards to cover the areas to the north, from Kong Oscars Fjord (72o N) to Store Koldewey (77o N). Most emphasis is laid on the Wollaston Forland area, whereas Traill Ø and Geographical Society Ø are only briefly reviewed. Jurassic sediments are all included in the Jameson Land Group except the latest Jurassic (Middle-Upper Volgian) rocks which are grouped into the Wollaston Forland Group together with Lower Cretaceous rocks of Ryazanian-Valanginian age. Only sediments belonging to the Jameson Land Group are treated here. The group is in the Wollaston Forland area divided into two formations: the Vardekløft Formation below and the Bernbjerg Formation above. The Vardekløft Formation is divided into three members: Pelion Member composed of estuarine sandstones of Bathonian-Late Oxfordian age; Jakobsstigen Member (new) composed of shallow shelf sandstones and mudstones of Early-Late Oxfordian age; and the Muslingebjerg Member (new) composed of barrier-lagoon sandstones and coals of presumed Late Oxfordian age. The overlying Bernbjerg Formation (new) is composed of dark often sandy mudstones of Late Oxfordian-Kimmeridgian (Early Volgian) age. The whole succession is at maximum 1 km thick and reflects deposition in progressively deeper water in a shelf area structurally built of slightly westwards tilted roughly N-S orientated fault blocks. Four regional transgressions controlled by basement faulting can be dated to Bathonian, Early Oxfordian, Late Oxfordian, and Early Kimmeridgian. Each transgression was followed by steady subsidence and prograding sedimentation.

Author response for "Isotopic chemostratigraphy and biostratigraphy of Lower Cretaceous Alisitos Formation (Punta China section), Baja California, Mexico"

2020 ◽  
Author(s):  
Jayagopal Madhavaraju ◽  
Robert W. Scott ◽  
Kandasamy Selvaraj ◽  
Yong IL Lee ◽  
Hannes Löser
Keyword(s):  
Lower Cretaceous ◽  
Baja California ◽  
Author Response
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