MESOZOIC ACID VOLCANICS FROM SOUTHERN ANGOLA - PETROLOGY, SR-ND ISOTOPE CHARACTERISTICS AND CORRELATION WITH THE ACID STRATOID VOLCANIC SUITES OF THE PARANA BASIN (SOUTH-EASTERN BRAZIL)

被引：0
作者：
ALBERTI, A
PICCIRILLO, EM
BELLIENI, G
CIVETTA, L
COMINCHIARAMONTI, P
MORAIS, EAA
机构：
[1] UNIV PADUA,DIPARTIMENTO MINERAL & PETROL,I-35137 PADUA,ITALY
[2] NAPLES UNIV,DIPARTIMENTO GEOFIS & VULCANOL,I-80138 NAPLES,ITALY
[3] UNIV PALERMO,IST MINERAL PETROG & GEOCHIM,I-90123 PALERMO,ITALY
[4] UNIV A NETO,DEPT GEOL,LUANDA,ANGOLA
来源：
EUROPEAN JOURNAL OF MINERALOGY | 1992年 / 4卷 / 03期
关键词：
MESOZOIC ACID VOLCANISM; PETROLOGY; GEOCHEMISTRY; SR-ND ISOTOPES; ANGOLA;
D O I：
暂无
中图分类号：
P57 [矿物学];
学科分类号：
070901 ;
摘要：
The Angolan Mesozoic volcanic suites are concentrated along the continental margin and are characterized by voluminous sheet-like acid rock-types overlying stratoid tholeiitic basalts. The acid volcanics closely correspond in terms of stratigraphy, petrology and Sr-Nd isotope compositions to those of Lower Cretaceous age (135 +/- 3 Ma) in the northern Parana basin (SE-Brazil). The Mesozoic tholeiitic volcanic suites of Angola (and Namibia), which crop out close to the continental margin represent the easterly extension of the vast volcanic activity of the Parana basin which occurred before the opening of the S. Atlantic ocean.
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页码：597 / 604
页数：8
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