Sea Floor spreading history of the Labrador Sea

1975 ◽  
Author(s):  
S P Srivastava
Keyword(s):  
Labrador Sea ◽  
Sea Floor ◽  
History Of ◽  
Sea Floor Spreading

Sea-floor spreading in the Labrador Sea: A new reconstruction

Geology ◽  
1989 ◽  
Vol 17 (11) ◽  
pp. 1000 ◽  
Author(s):  
W. R. Roest ◽  
S. P. Srivastava
Keyword(s):  
Labrador Sea ◽  
Sea Floor ◽  
Sea Floor Spreading

History of Sea-Floor Spreading West of Baja California

1970 ◽  
Vol 81 (2) ◽  
pp. 491 ◽  
Author(s):  
C. G. CHASE ◽  
H. W. MENARD ◽  
R. L. LARSON ◽  
G. F. SHARMAN ◽  
S. M. SMITH
Keyword(s):  
Baja California ◽  
Sea Floor ◽  
History Of ◽  
Sea Floor Spreading

Discontinuities in the History of Sea-floor Spreading

Nature ◽  
1968 ◽  
Vol 217 (5135) ◽  
pp. 1212-1222 ◽  
Author(s):  
ERIC D. SCHNEIDER ◽  
PETER R. VOGT
Keyword(s):  
Sea Floor ◽  
History Of ◽  
Sea Floor Spreading

Cretaceous

1992 ◽  
Vol 13 (1) ◽  
pp. 131-139 ◽  
Author(s):  
J. M. Hancock ◽  
P. F. Rawson
Keyword(s):  
Early Cretaceous ◽  
Sedimentary Basins ◽  
Major Change ◽  
The Arctic ◽  
Sea Floor ◽  
The North ◽  
Marine Sedimentation ◽  
History Of ◽  
Sea Floor Spreading ◽  
Sea Area

AbstractEarly CretaceousThe Cretaceous Period lasted for about 70 million years. During this time there was a major change in the sedimentary history of the area as tectonism died down and deposition started of an extensive blanket of coccolith ooze: the Chalk. The change took place mainly over a brief interval across the Albian/Cenomanian (Lower/Upper Cretaceous) boundary, at about 95 Ma. Until that time crustal extension along the Arctic-North Atlantic megarifts continued to influence the tectonic evolution of northwest Europe (Ziegler 1982, 1988). This tensional régime caused rifting and block faulting, particularly across the Jurassic-Cretaceous boundary (Late Cimmerian movements) and in the mid Aptian (Austrian phase). During the latter phase, sea-floor spreading commenced in the Biscay and central Rockall Rifts. The northern part of the Rockall Rift began to widen too, possibly by crustal stretching rather than sea-floor spreading (Ziegler 1988, p. 75). During the Albian the regional pattern began to change and by the beginning of the Cenomanian rifting had effectively ceased away from the Rockall/Faeroe area.Most of the Jurassic sedimentary basins continued as depositional areas during the Early Cretaceous, but the more extensive preservation of Lower Cretaceous sediments provides firmer constraints on some of the geographical reconstructions. The marked sea-level fall across the Jurassic-Cretaceous boundary isolated the more southerly basins as areas of non-marine sedimentation, and it was not until the beginning of the Aptian that they became substantially marine.The extent of emergence of highs in the North Sea area is difficult to assess, especially where

The sea-floor spreading history of the eastern Indian Ocean

1982 ◽  
Vol 5 (3) ◽  
pp. 225-247 ◽  
Author(s):  
Thomas S. Powell ◽  
Bruce P. Luyendyk
Keyword(s):  
Indian Ocean ◽  
Eastern Indian Ocean ◽  
Sea Floor ◽  
History Of ◽  
Sea Floor Spreading

A displaced Tibetan massif as a possible source of some Malayan rocks

1972 ◽  
Vol 109 (6) ◽  
pp. 483-489 ◽  
Author(s):  
A. R. Crawford
Keyword(s):  
Indian Ocean ◽  
Siberian Platform ◽  
Sea Floor ◽  
History Of ◽  
The Indian Ocean ◽  
Sea Floor Spreading

SummaryExplanations (Burton, 1970; Ridd, 1971) of the westerly origin of the sediments now forming the rocks of northwest Malaya, by deriving them from an India which once lay contiguously against Malaya are unacceptable because of the complexity of the movement of Gondwanic India and the known history of the Indian Ocean. The effects of the movement of India into Asia were such that the Tibetan part of the orogen which continues south through Yunnan into Malaya was distorted. Before the arrival of India the Tibetan massif also may have lain still further away from the rest of Asia and moved towards the Siberian Platform by sea-floor spreading in the Tethys, so that its erosion could have provided material now forming part of Malaya. The Tibetan–Yunnan–Malay orogen has a complex and probably sutured form.

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