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Gondwanaland: Its formation, evolution and dispersion
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events in the high-grade gneisses of the Schirmacher Hills, East Antarctica. Babu presented an overview of the Archaean Nellore Schist belt. Prame gave an account of the geochemistry of charnockitic rocks from southern and southeastern Sri Lanka. Fernando et al. considered that corundum in Sri Lanka was derived from skarns and pegmatites. Lakshminarayana identified East Antarctica as the provenance for post-Archaean sedimentation in the basins of the southeastern Indian peninsula. The concluding part of the symposium included summary reports by the Chairpersons of the session and general discussion. During the meeting, Ramakrishnan presented the progress of the Indian working group of IGCP 368. A half day’s field trip was organized as part of the thematic meeting on December 4, 1996. The field trip included a visit to khondalites at the Kailasa hill, leptynites around the Andhra University Campus and charnockites at St. Joseph’s hill. The field trip generated much enthusiasm and scientific debate among the delegates.
Gondwanaland: Its formation, evolution and dispersion Y. MIASHITA’
and T.YAMAMOT02
‘Ehime University, Japan 20saka City University, Japan The special symposium of “Gondwanaland: its formation, evolution and dispersion” was held at Kobe University, Japan, January 20-21, 1996. The symposium was organized by the IGCP National Committee of Japan and supported by the Japan Academy of Science. This symposium aimed to assemble Japanese reseachers who are conducting Gondwanalandrelated studies under various IGCP projects, to encourage and advertise the Gondwanan reseachers in Japan and to summarize the activities of IGCP projects in Japan to contribute to the 30th IGC in Beijing during August 1996. The symposium had two parts: ‘oral presentations’ and ‘discussion’. On the first day, about 30 scientists participated and 11 oral presentations by each IGCP group were given. T. Watanabe (IGCP 238) showed the geodynamic model of creation and development of the paleoasian ocean. M. Yoshida (288) presented geochronological data from Precambrian rocks in India and pointed out a possibility of tectonic division using some isotopic features of these rocks. S. Kanisawa
(315) gave a review of the Rapakivi granite and S. Yoshikura (315) gave an example of the genesis of a Rapakivi granite from the Cape Ashizuri igneous complex, Japan, for which he inferred magma mixing. Y. Motoyoshi (304) ultra-high temperature introduced metamorphism (UHT) in the Napier complex, East Antarctica, based on detailed phase analyses of metamorphic minerals. M. Ehiro and S. Kanisawa (321) discussed the formation of the South Kitakami palaeoland and its evolution during Palaeozoic time, with special reference to the palaeobiogeography of eastern Asia. K. Hisada and S. Arai (321) showed chemical properties of detrital chromspinel from Devonian formations in the Kitakami area and suggested that these were derived from the subduction zone along the northern margin of Gondwanaland. M. Goto (328) presented many beautiful photographs of the Palaeozoic fish remains from Japan and commented on their palaeobiogeographical significance. J. Tazawa (359) pointed out close similarities of lithology, stratigraphy and some fossil faunas throughout the Kitakami and Hida mountains, Japan, and the Sikhote Alin mountains from far east of Russia and reconstructed the palaeogeography of East Asia and its environs in the Middle Permian period. M. Arima (368) gave an overview and P-T-t paths of the granulite facies metamorphic rocks that experienced the intial isobaric cooling and the later lithospheric thinning in the Eastern Ghats, India. M. Yoshida (348) introduced three topics of recent studies of the Mozambique belt. Extended discussions, including six keynote presentations, were held on the second day, which consisted of three thematic parts: i) Gondwanaland in Precambrian time: the tectonics of Gondwanaland formation process; ii. Gondwanaland in Palaeozoic time: evolution and dispersion of Gondwanaland; and iii) Gondwanaland in Mesozoic time: coupling to Eurasia.
Fourth IGCP 348 field meeting in Northern Ethiopia and Eritrea R. J. THOMAS Council for Geoscience (Geological PO Box 900, Pietermarlitzburg 3200,
Survey), South Africa
The fourth IGCP 348 (Mozambique and related belts) International Field Workshop was recently held in Northern Ethiopia and Eritrea, northeast
events in the high-grade gneisses of the Schirmacher Hills, East Antarctica. Babu presented an overview of the Archaean Nellore Schist belt. Prame gave an account of the geochemistry of charnockitic rocks from southern and southeastern Sri Lanka. Fernando et al. considered that corundum in Sri Lanka was derived from skarns and pegmatites. Lakshminarayana identified East Antarctica as the provenance for post-Archaean sedimentation in the basins of the southeastern Indian peninsula. The concluding part of the symposium included summary reports by the Chairpersons of the session and general discussion. During the meeting, Ramakrishnan presented the progress of the Indian working group of IGCP 368. A half day’s field trip was organized as part of the thematic meeting on December 4, 1996. The field trip included a visit to khondalites at the Kailasa hill, leptynites around the Andhra University Campus and charnockites at St. Joseph’s hill. The field trip generated much enthusiasm and scientific debate among the delegates.
Gondwanaland: Its formation, evolution and dispersion Y. MIASHITA’
and T.YAMAMOT02
‘Ehime University, Japan 20saka City University, Japan The special symposium of “Gondwanaland: its formation, evolution and dispersion” was held at Kobe University, Japan, January 20-21, 1996. The symposium was organized by the IGCP National Committee of Japan and supported by the Japan Academy of Science. This symposium aimed to assemble Japanese reseachers who are conducting Gondwanalandrelated studies under various IGCP projects, to encourage and advertise the Gondwanan reseachers in Japan and to summarize the activities of IGCP projects in Japan to contribute to the 30th IGC in Beijing during August 1996. The symposium had two parts: ‘oral presentations’ and ‘discussion’. On the first day, about 30 scientists participated and 11 oral presentations by each IGCP group were given. T. Watanabe (IGCP 238) showed the geodynamic model of creation and development of the paleoasian ocean. M. Yoshida (288) presented geochronological data from Precambrian rocks in India and pointed out a possibility of tectonic division using some isotopic features of these rocks. S. Kanisawa
(315) gave a review of the Rapakivi granite and S. Yoshikura (315) gave an example of the genesis of a Rapakivi granite from the Cape Ashizuri igneous complex, Japan, for which he inferred magma mixing. Y. Motoyoshi (304) ultra-high temperature introduced metamorphism (UHT) in the Napier complex, East Antarctica, based on detailed phase analyses of metamorphic minerals. M. Ehiro and S. Kanisawa (321) discussed the formation of the South Kitakami palaeoland and its evolution during Palaeozoic time, with special reference to the palaeobiogeography of eastern Asia. K. Hisada and S. Arai (321) showed chemical properties of detrital chromspinel from Devonian formations in the Kitakami area and suggested that these were derived from the subduction zone along the northern margin of Gondwanaland. M. Goto (328) presented many beautiful photographs of the Palaeozoic fish remains from Japan and commented on their palaeobiogeographical significance. J. Tazawa (359) pointed out close similarities of lithology, stratigraphy and some fossil faunas throughout the Kitakami and Hida mountains, Japan, and the Sikhote Alin mountains from far east of Russia and reconstructed the palaeogeography of East Asia and its environs in the Middle Permian period. M. Arima (368) gave an overview and P-T-t paths of the granulite facies metamorphic rocks that experienced the intial isobaric cooling and the later lithospheric thinning in the Eastern Ghats, India. M. Yoshida (348) introduced three topics of recent studies of the Mozambique belt. Extended discussions, including six keynote presentations, were held on the second day, which consisted of three thematic parts: i) Gondwanaland in Precambrian time: the tectonics of Gondwanaland formation process; ii. Gondwanaland in Palaeozoic time: evolution and dispersion of Gondwanaland; and iii) Gondwanaland in Mesozoic time: coupling to Eurasia.
Fourth IGCP 348 field meeting in Northern Ethiopia and Eritrea R. J. THOMAS Council for Geoscience (Geological PO Box 900, Pietermarlitzburg 3200,
Survey), South Africa
The fourth IGCP 348 (Mozambique and related belts) International Field Workshop was recently held in Northern Ethiopia and Eritrea, northeast