scholarly journals The Late Cretaceous Middle Fork caldera, its resurgent intrusion, and enduring landscape stability in east-central Alaska

Geosphere ◽  
2014 ◽  
Vol 10 (6) ◽  
pp. 1432-1455 ◽  
Author(s):  
C. R. Bacon ◽  
C. Dusel-Bacon ◽  
J. N. Aleinikoff ◽  
J. F. Slack
Keyword(s):  
Late Cretaceous ◽  
East Central ◽  
Middle Fork

Late Cretaceous to Middle Eocene Magmatism and Metallogeny of a Portion of the Southeastern Anatolian Orogenic Belt, East-Central Turkey

2013 ◽  
Vol 108 (4) ◽  
pp. 641-666 ◽  
Author(s):  
I. Kuscu ◽  
R. M. Tosdal ◽  
G. Gencalioglu-Kuscu ◽  
R. Friedman ◽  
T. D. Ullrich
Keyword(s):  
Late Cretaceous ◽  
Middle Eocene ◽  
Orogenic Belt ◽  
East Central ◽  
Central Turkey

Fossil crabs (Crustacea: Decapoda) from the Late Cretaceous cárdenas Formation, east-central Mexico

1995 ◽  
Vol 69 (2) ◽  
pp. 340-350 ◽  
Author(s):  
Francisco J. Vega ◽  
Rodney M. Feldmann ◽  
Francisco Sour-Tovar
Keyword(s):  
Late Cretaceous ◽  
Fossil Record ◽  
New Genus ◽  
Gulf Coast ◽  
Central Mexico ◽  
New Genus And Species ◽  
East Central ◽  
The Family ◽  
Marine Lagoon ◽  
First Time

Twenty-four nearly complete carapace samples were collected at three different localities of the Maastrichtian (Late Cretaceous) Cárdenas Formation in San Luis Potosí, east-central Mexico. The material has been assigned to five families: the Callianassidae, Dakoticancridae, Carcineretidae, ?Majidae, and Retroplumidae. Two genera of callianassid shrimp are described, Cheramus for the first time in the fossil record. Dakoticancer australis Rathbun is reported as the most abundant crustacean element; one new genus and species of carcineretid crab, Branchiocarcinus cornatus, is erected, and a single, fragmentary specimen is questionably referred to the Majidae. The three localities reflect paleoenvironmental differences, exhibited by different lithologies, within marginal marine, lagoon environments. The record of dakoticancrid crabs in the Cardenas Formation extends the paleobiogeographic range of the family and the genus Dakoticancer. Carcineretid crabs, although not abundant, seem to have been a persistent element of crustacean assemblages in clastic environments during the Late Cretaceous of the ancestral Gulf Coast of Mexico.

Duration of Late Cretaceous–early Tertiary magmatism in east-central Sonora, Mexico

2001 ◽  
Vol 113 (4) ◽  
pp. 521-531 ◽  
Author(s):  
Fred W. McDowell ◽  
Jaime Roldán-Quintana ◽  
James N. Connelly
Keyword(s):  
Late Cretaceous ◽  
East Central ◽  
Early Tertiary

scholarly journals Supplemental Material: Late Cretaceous upper-crustal thermal structure of the Sevier hinterland: Implications for the geodynamics of the Nevadaplano

2021 ◽  
Author(s):  
N.R. Blackford ◽  
et al.
Keyword(s):  
Late Cretaceous ◽  
Cross Sections ◽  
Thermal Structure ◽  
East Central ◽  
Crustal Thermal Structure

<div>Figure 7. Compilation of cross sections across east-central Nevada and western Utah (1:200,000 scale) with deformed cross sections in the top row (A) and restored cross sections in the bottom row (B). Translucent areas represent eroded rock above the modern surface (deformed cross sections) and above the Paleogene unconformity (restored cross sections).<br></div><div><br></div><div><br></div><div><br></div><div><br></div>

Review of radiometric data from the Yukon Crystalline Terrane, Alaska and Yukon Territory

1985 ◽  
Vol 22 (4) ◽  
pp. 525-537 ◽  
Author(s):  
Frederic H. Wilson ◽  
James G. Smith ◽  
Nora Shew
Keyword(s):  
Early Cretaceous ◽  
Late Cretaceous ◽  
Yukon Territory ◽  
Early Jurassic ◽  
Metamorphic Event ◽  
East Central ◽  
Early Tertiary ◽  
Radiometric Data

The results of more than 20 years of geochronological studies in the Yukon Crystalline Terrane in east-central Alaska and the western Yukon Territory suggest at least six igneous and thermal (metamorphic?) events. Plutonism during Mississippian, Early Jurassic, mid-Cretaceous, Late Cretaceous, and early Tertiary times is indicated. Evidence also indicates that Mississippian, Early Jurassic, late Early Cretaceous, and late Cretaceous thermal (metamorphic?) events have affected parts of the terrane. The western part of the terrane was affected by a significant regional metamorphic event in late Early Cretaceous time, followed by a terrane-wide mid-Cretaceous plutonic event. The pattern of K–Ar ages allows division of the terrane into domains, bounded by northeast-trending lineaments.

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