Phanerozoic Equal-Area World Maps

Briden, J. C.; Drewry, G. E.; Smith, Alan G.

doi:10.1086/628006

Cited by 83 publications

(19 citation statements)

References 2 publications

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“…By the beginning of the Tertiary, Liberia was separated from Paraiba (Brazil) by about 800 km. Nonetheless, the Atlantic was relatively shallow and populated by numerous islands that Provided stepping Briden et al 1974). stones across the region which have since been carried subsea (Tarling & Tarling 1971, Axelrod 1972, Fig. 25, Carr & Coleman 1974.…”

Section: Cretaceous Breakup Of Gondwanalandmentioning

confidence: 99%

Late Cretaceous and Tertiary vegetation history of Africa

Axelrod¹,

Raven²

1978

Biogeography and Ecology of Southern Africa

316

295

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Section: Cretaceous Breakup Of Gondwanalandmentioning

confidence: 99%

Late Cretaceous and Tertiary vegetation history of Africa

Axelrod¹,

Raven²

1978

Biogeography and Ecology of Southern Africa

316

295

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“…The positions of the continents are known reasonably well for the past 500 Myr (e.g., Dietz and Holden, 1970;Briden et al, 1974;Smith and Briden, 1977;Barron et al, 1980), and these data give convincing support to the plate tectonic idea of continental drift. On uniformitarian grounds it would seem reasonable to assume that the same processes must have operated throughout the history of the Earth.…”

Section: Continental Drift/polar Wanderingmentioning

confidence: 53%

“…Because of the wealth of evidence, it is now firmly established that the major causal factor for this glaciation was continental drift, with glacial episodes in particular locations corresponding to times when they were in polar positions (Crowell and Frakes, 1970;Frakes and Crowell, 1972;Frakes, 1979). At this time the Earth's landmasses were joined in a single supercontinent, Pangaea, situated mainly in the Southern Hemisphere (e.g., Dietz and Holden, 1970;Briden et al, 1974). Ice masses waxed and waned as this continent drifted near and across the South Pole, and the epoch apparently ended when the continental configuration changed to one which favoured latitudinal rather than longitudinal air and ocean currents (Crowell, 1978).…”

Section: The Past 4700 Myrmentioning

confidence: 99%

Climate and paleoclimate: What we can learn about solar luminosity variations

Wigley

1981

Sol Phys

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The Earth's climate is not constant, and has experienced major changes in the past on all timescales. The causes of these changes, although still incompletely understood, vary according to the timescale considered. Some of the most important causal mechanisms include continental drift, changes in the Earth's orbital parameters, volcanic activity and solar variations. Solar variations have been invoked to explain climatic change on almost all timescales from 1 to 109 yr. Unfortunately, even though the Sun is a prime candidate for explaining many changes in past climate, the use of past climate as a proxy for solar luminosity changes is fraught with difficulty. For example:(1) In many cases observed changes in climate can be adequately explained without recourse to solar variations as a causal factor. In fact, on the longest timescales the Earth's climate was remarkably similar to today in spite of a considerably lower solar output.(2) For most timescales of climatic change there are, as yet, no plausible theories giving similar timescale variations in solar activity, so that a vital link between cause and effect is missing.(3) There are considerable uncertainties in the record of past climates.(4) On short timescales many proposed solar activity-climate links have failed to stand up to rigorous statistical analysis.This paper reviews past changes in climate and proposed causal mechanisms on timescales of from 1 to 109 yr. The evidence for solar activity-climate links is discussed with special reference to the above points.

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“…BRIDEN et al, 1974;IRVING, 1977) a reconstruction of the position of Central Iran was attempted with the presently available palaeomagnetic data. This is shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Differences in opinion exist concerning the origin of Central Iran (part of Eurasia according CRAWFORD (1972) or part of Gondwana as suggested by our own early palaeomagnetic studies (BECKER et al, 1973;SOFFEL et al, 1975) and the total amount of drift (splitting away from Arabia or successive northward drift of Gondwana fragments, FORSTER, 1976). The palaeomagnetic reconstructions of Gondwana and Eurasia since the early Paleozoic (BRIDEN et al,1974;IRVING,1977) give no detailed information about the southern part of Central Asia. This is due to little or no palaeomagnetic information available for Turan, Hindukush, Pamir, Tienshan, Karakorum, and Kuenlun.…”

Section: Introductionmentioning

confidence: 99%

Apparent Polar Wander Path of Central Iran and its Geotectonic Interpretation

Soffel

Förster

1980

J. geomagn. geoelec

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Palaeomagnetic investigations have been made on mainly igneous rocks and red sandstones from 167 sites in Central Iran covering the time interval between Quaternary and Late Precambrian. Based on these data an apparent polar wander path has been established for Central Iran which shows marked differences with the apparent polar wander path of Eurasia (IRVING, 1977) but some resemblances with the apparent polar wander paths of the Gondwana landmasses India and Africa (KLOOTWUK, 1976;MCELHINNY, 1973;IRVING, 1977). The palaeoremanence directions indicate a counterclockwise rotation of more than 90 of Central Iran with respect to Eurasia since Upper Paleozoic. According to the palaeolatitudes and other, mainly geological evidence, Central Iran was part of the Gondwana landmasses throughout parts of the Paleozoic. It was separated much earlier from Gondwana than India and had also a much earlier (possibly Triassic) collision with Eurasia.

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Phanerozoic Equal-Area World Maps

Cited by 83 publications

References 2 publications

Late Cretaceous and Tertiary vegetation history of Africa

Late Cretaceous and Tertiary vegetation history of Africa

Climate and paleoclimate: What we can learn about solar luminosity variations

Apparent Polar Wander Path of Central Iran and its Geotectonic Interpretation

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