Timing of granite emplacement, crustal flow and gneiss dome formation in the Variscan segment of the Pyrenees

2014 ◽  
Vol 405 (1) ◽  
pp. 265-287 ◽  
Author(s):  
Yoann Denèle ◽  
Bernard Laumonier ◽  
Jean-Louis Paquette ◽  
Philippe Olivier ◽  
Gérard Gleizes ◽  
...  
Keyword(s):  
Gneiss Dome ◽  
Dome Formation ◽  
Granite Emplacement

On the origin of Early Proterozoic gneiss domes and metamorphic nodes, northern Michigan

1996 ◽  
Vol 33 (7) ◽  
pp. 1053-1053 ◽  
Author(s):  
David Schneider ◽  
Daniel Holm ◽  
Daniel Lux
Keyword(s):  
Gravity Anomaly ◽  
Gneiss Dome ◽  
Near Surface ◽  
Dome Formation ◽  
Crustal Shortening ◽  
Gneiss Domes ◽  
History Of ◽  
The Republic ◽  
Different Origins ◽  
Northern Michigan

Biotite 40αr/39αr cooling ages from medium-pressure (500–600 MPa) rocks in the Watersmeet district, northern Michigan, suggest significant cooling–uplift and concomitant deformation during gneiss dome formation at~1755 Ma, well after the close of the 1870–1830 Ma Penokean orogeny. However, an 1822 Ma hornblende plateau date indicates that the isograds surrounding the dome are Penokean in age. We attribute gneiss dome formation and doming of Penokean-aged isograds to an episode of orogenic collapse superimposed on an earlier history of crustal shortening. This contrasts with the compressional origin for gneiss domes preserved in the low-pressure (200–300 MPa) Republic district. The different origins may reflect the fact that collapse was localized along the overthickened region of the orogenic belt. In contrast to the Watersmeet area, hornblende and biotite 40Ar/39Ar ages obtained from the Republic area are 1720–1680 Ma. Given the relatively shallow depth of this region, it is unlikely that temperatures remained above 500 °C for over 100 Ma following collision. We interpret these ages to reflect a major thermal event that may have been responsible for formation of the Republic metamorphic node. This interpretation is supported by the recent identification of an ~1730 Ma pluton that is likely the cause of a large, near-surface, negative gravity anomaly coincident with the node, and by the fact that the metamorphic node crosscuts Penokean structures.

Himalayan gneiss dome formation in the middle crust and exhumation by normal faulting: New geochronology of Gianbul dome, northwestern India

2014 ◽  
Vol 127 (1-2) ◽  
pp. 162-180 ◽  
Author(s):  
Forrest Horton ◽  
Jeffrey Lee ◽  
Bradley Hacker ◽  
Meilani Bowman-Kamaha’o ◽  
Michael Cosca
Keyword(s):  
Normal Faulting ◽  
Gneiss Dome ◽  
Dome Formation ◽  
Middle Crust ◽  
Northwestern India

The giant Shakhdara migmatitic gneiss dome, Pamir, India-Asia collision zone: 2. Timing of dome formation

Tectonics ◽  
2013 ◽  
Vol 32 (5) ◽  
pp. 1404-1431 ◽  
Author(s):  
Konstanze Stübner ◽  
Lothar Ratschbacher ◽  
Carsten Weise ◽  
Judy Chow ◽  
Jakob Hofmann ◽  
...  
Keyword(s):  
Gneiss Dome ◽  
Dome Formation ◽  
Collision Zone ◽  
Migmatitic Gneiss

scholarly journals Thermal interaction of middle and upper crust during gneiss dome formation: example from the Montagne Noire (French Massif Central)

2016 ◽  
Vol 34 (5) ◽  
pp. 447-462 ◽  
Author(s):  
K. Fréville ◽  
B. Cenki-Tok ◽  
P. Trap ◽  
M. Rabin ◽  
A. Leyreloup ◽  
...  
Keyword(s):  
Thermal Interaction ◽  
Upper Crust ◽  
French Massif Central ◽  
Gneiss Dome ◽  
Massif Central ◽  
Dome Formation ◽  
Montagne Noire

Pressure–temperature–time constraints on gneiss dome formation in an intracontinental orogen

2021 ◽  
Author(s):  
Jan Varga ◽  
Tom Raimondo ◽  
Laura Morrissey ◽  
David E. Kelsey ◽  
Martin Hand
Keyword(s):  
Time Constraints ◽  
Gneiss Dome ◽  
Dome Formation ◽  
Temperature Time

Age of emplacement of the Okanogan gneiss dome, north-central Washington

1976 ◽  
Vol 87 (9) ◽  
pp. 1217 ◽  
Author(s):  
K. F. FOX ◽  
C. D. RINEHART ◽  
J. C. ENGELS ◽  
T. W. STERN
Keyword(s):  
Gneiss Dome ◽  
North Central
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