Timing of geological events in the circum-Pacific region

1977 ◽  
Vol 14 (4) ◽  
pp. 551-561 ◽  
Author(s):  
Tatsuro Matsumoto
Keyword(s):  
Evolutionary Development ◽  
Pacific Region ◽  
Late Mesozoic ◽  
Late Precambrian ◽  
Tectonic History ◽  
Regional Correlation ◽  
Minor Degree ◽  
Igneous Activity ◽  
Tectonic Movements ◽  
Pacific Area

Two aspects of the timing of geological events in the circum-Pacific area are treated here. First, the tectonic history is considered on the basis of regional correlation. The circum-Pacific belt has been mobile in various ways since the late Precambrian and orogeny proceeded poly-cyclically without showing stabilized termination in any cycle. A major evolutionary development with an adolescent stage in late Mesozoic times is recognized.Second, the timing of the late Mesozoic events is examined in more detail, using Japan as an example. Tectonic movements proceeded for long periods of time, with several intermittent impulses or stepwise accelerations of major or minor degree. Minor movements are compatible with the tectonic displacement at the time of earthquakes. Igneous activity, including emplacement of granitic bodies and some associated volcanism, was long-lasting, and episodic in space and time.

Stratigraphy, sedimentology, and regional correlation of the Horsethief Creek Group (Hadrynian, Late Precambrian) in the northern Purcell and Selkirk Mountains, British Columbia

1980 ◽  
Vol 17 (12) ◽  
pp. 1708-1724 ◽  
Author(s):  
T. P. Poulton ◽  
P. S. Simony
Keyword(s):  
British Columbia ◽  
Rocky Mountains ◽  
Submarine Fan ◽  
Source Areas ◽  
Late Precambrian ◽  
Coarse Sediment ◽  
Regional Correlation ◽  
Selkirk Mountains ◽  
Igneous Activity ◽  
Thickness Variations

The Hadrynian Horsethief Creek Group in the northernmost Purcell Mountains and adjacent Selkirk Mountains is subdivisible regionally into grit, slate, carbonate, and upper clastic divisions in upward succession. The grit division represents a submarine fan assemblage and the slate division hemipelagic muds probably deposited in intermediate depths. The carbonate division comprises an interval of discontinuous lenses representing "bahamian" carbonate bank and off-bank assemblages, and the upper clastic division is a heterogeneous clastic wedge, which shows some evidence of northerly and westerly increasing depositional depths. Feldspathic quartz pebble conglomerate beds intercalated with the carbonates in both bank and off-bank facies indicate tectonic activation of granitic source areas like those from which similar rocks in the upper part of the Miette Group of the Rocky Mountains were derived.The upper part of the slate division, which can be differentiated in western localities as a distinct semipelite–amphibolite unit, and the upper clastic division each expand in thickness northwestward to dominate the Horsethief Creek outcrops in the Selkirk Mountains. These thickness variations, the increase of amphibolite northward in the semipelite–amphibolite unit, and the loss of grit beds northward in the slate division suggest deposition in a depocentre that received coarse sediment from southerly and easterly directions, and that became the site of mafic igneous activity.

Late Mesozoic and Cenozoic tectonic history of south central California

Tectonics ◽  
1984 ◽  
Vol 3 (6) ◽  
pp. 659-675 ◽  
Author(s):  
A. E. J. Engel ◽  
P. A. Schultejann
Keyword(s):  
Central California ◽  
Late Mesozoic ◽  
Tectonic History ◽  
South Central ◽  
History Of

Active tectonics and land-use strategies: a Palaeolithic example from northwest Greece

Antiquity ◽  
1993 ◽  
Vol 67 (255) ◽  
pp. 292-312 ◽  
Author(s):  
Geoff Bailey ◽  
Geoff King ◽  
Derek Sturdy
Keyword(s):  
Land Use ◽  
Landscape Change ◽  
Human Life ◽  
Active Tectonics ◽  
Plate Motions ◽  
Human Survival ◽  
Tectonic History ◽  
The Earth ◽  
History Of ◽  
Tectonic Movements

Tectonic movements – continuously re-moulding the surface of the earth over the inexorable activity of underlying plate motions – are rarely taken into account when assessing landscape change, except as an exotic hazard to human life or a temporary disruption in longer-term trends. Active tectonics also create and sustain landscapes that can be beneficial to human survival. The tectonic history of northwest Greece shows Palaeolithic sites located to take advantage of tectonically created features at both local and regional scales.

scholarly journals Late Mesozoic to Paleogene igneous activity in west Chugoku, southwest Japan.

1985 ◽  
Vol 91 (10) ◽  
pp. 723-742 ◽  
Author(s):  
Nobuhide MURAKAMI
Keyword(s):  
Southwest Japan ◽  
Late Mesozoic ◽  
Igneous Activity

The tectonic history of the Niğde-Kırşehir Massif and the Taurides since the Late Mesozoic: Paleomagnetic evidence for two-phase orogenic curvature in Central Anatolia

Tectonics ◽  
2016 ◽  
Vol 35 (3) ◽  
pp. 772-811 ◽  
Author(s):  
Mualla Cengiz Çinku ◽  
Z. Mümtaz Hisarli ◽  
Yücel Yılmaz ◽  
Beyza Ülker ◽  
Nurcan Kaya ◽  
...  
Keyword(s):  
Central Anatolia ◽  
Two Phase ◽  
Late Mesozoic ◽  
Tectonic History ◽  
History Of

Aspects of polychaete ecology with particular reference to commensalism

1969 ◽  
Vol 255 (800) ◽  
pp. 443-458 ◽  
Keyword(s):  
Coral Reefs ◽  
Southern Africa ◽  
Royal Society ◽  
Littoral Zone ◽  
Solomon Islands ◽  
Pacific Region ◽  
Polychaete Species ◽  
West Pacific ◽  
Eastern Australia ◽  
Pacific Area

In his monograph of the Polychaeta in the Fauna of India series, Fauvel (1953) records about 450 species that are to be found in the waters around India but he believed that this number represented only about one-half of the total. Day’s recent work (Day 1967) dealing with the polychaete fauna of Southern Africa has listed about 750 species from this region. It seems probable that a similarly large number of polychaete species will be recorded eventually from the central West Pacific region since a large proportion of the species recorded from Southern Africa and around India are known to be distributed throughout the Indo-West Pacific area, extending from the Red Sea to Japan and Eastern Australia. In many of these species a circumtropical distribution is apparent. In view of the fact that the polychaete fauna of the central West Pacific region is still very incompletely known, the Royal Society Expedition to the Solomon Islands in 1965 offered a unique opportunity for obtaining material from this area. The bulk of the material collected by the author comes from the littoral zone of the coral reefs as well as from the sediments of the more sheltered shores. However, in conjunction with Dr D. R. Stoddart’s physiographic survey of the Marovo Lagoon complex in the eastern part of New Georgia, the author carried out a dredging survey, comprising about 40 stations in depths of less than 35 m, and many interesting shallow-water invertebrates were obtained.

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