Pyroxenite Xenoliths from Al Ashaer Volcano, Syria: Constraints on the Thermal State of the Subcontinental Arabian Lithosphere
Pyroxenite Xenoliths from Al Ashaer Volcano, Syria: Constraints on the Thermal State of the Subcontinental Arabian Lithosphere
复制标题
叙利亚阿沙尔火山的辉石岩包体：对阿拉伯次大陆岩石圈热状态的限制
DOI：
10.1080/00206819909465177
复制
发表时间：
1999
影响因子：
2.6
通讯作者：
G. Syada
中科院分区：
文献类型：
--
作者：
L. Medaris;G. Syada
对叙利亚上新世 Al Ashaer 火山的辉石岩捕虏体进行了研究，以扩大阿拉伯板块西部辉石岩捕虏体的数据库，并补充相关尖晶石橄榄岩捕虏体的现有数据。这些数据对于确定阿拉伯板块岩石圈的化学成分和热状态以及评估地幔可能的地理和长期变化至关重要。对 16 个 Al Ashaer 辉石岩捕虏体样品进行了 X 射线荧光分析，其中主量元素和微量元素均进行了分析，并用电子探针测定了 6 个样品中的矿物成分。阿莎尔辉石岩属于地幔捕虏体的铝辉石族，包括含尖晶石和石榴石的品种，其特征是镶嵌结构。岩石和矿物成分表明辉石岩是由上地幔中的碱性玄武岩熔体经高压晶体堆积而形成的。 Al Ashaer 辉石岩的平衡条件为 97...
Pyroxenite xenoliths from the Pliocene Al Ashaer volcano, Syria, have been investigated to expand the database on pyroxenite xenoliths in the western part of the Arabian plate, and to complement the existing data for associated spinel peridotite xenoliths. Such data are essential for establishing the chemical composition and thermal state of the Arabian plate lithosphere, and for evaluating possible geographic and secular variations in the mantle. Sixteen samples of Al Ashaer pyroxenite xenoliths were analyzed by X-ray fluorescence for major and minor elements, and mineral compositions in six samples were determined by electron microprobe. Al Ashaer pyroxenites belong to the Al-augite group of mantle xenoliths, include spinel- and garnet-bearing varieties, and are characterized by a mosaic texture. Rock and mineral compositions indicate that the pyroxenites formed by high-pressure crystal accumulation from alkali basaltic melts in the upper mantle. Equilibration conditions for Al Ashaer pyroxenites are 97...