Provenance implications of Th–U–Pb electron microprobe ages from detrital monazite in the Carboniferous Upper Silesia Coal Basin, Poland
Provenance implications of Th–U–Pb electron microprobe ages from detrital monazite in the Carboniferous Upper Silesia Coal Basin, Poland
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DOI：
10.1016/j.lithos.2005.08.004
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发表时间：
2006-05
期刊：
影响因子：
3.5
通讯作者：
M. Kusiak;Artur Kędzior;M. Paszkowski;Kazuhiro Suzuki;I. González-Álvarez;B. Wajsprych;M. Doktor
中科院分区：
文献类型：
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作者：
M. Kusiak;Artur Kędzior;M. Paszkowski;Kazuhiro Suzuki;I. González-Álvarez;B. Wajsprych;M. Doktor
本文报道了上西里西亚煤盆地石炭纪砂岩中碎屑独居石的CHIME（化学Th-U-Pb等时线法）定年结果。共4739点的863独居石颗粒进行了分析，从砂岩样品来自6个地层单位的沉积序列。年龄分布确定在碎屑独居石从USCB序列和相关的特定日期域在潜在的源区。大多数独居石在所有样品产生约。300-320 Ma（华力西期）;然而，也获得了eo-Variscan，Caledonian和Cadomian年龄。的主要年龄相媲美的多造山波希米亚地块（BM），这表明，在BM的各种结晶岩性的USCB沉积物的主要来源的某些tectonostratia域的年龄。
This paper reports the results of CHIME (chemical Th–U–Pb isochron method) dating of detrital monazites from Carboniferous sandstones in the Upper Silesia Coal Basin (USCB). A total of 4739 spots on 863 monazite grains were analyzed from samples of sandstone derived from six stratigraphic units in the sedimentary sequence. Age distributions were identified in detrital monazites from the USCB sequence and correlated with specific dated domains in potential source areas. Most monazites in all samples yielded ca. 300–320 Ma (Variscan) ages; however, eo-Variscan, Caledonian and Cadomian ages were also obtained. The predominant ages are comparable to reported ages of certain tectonostratigraphic domains in the polyorogenic Bohemian Massif (BM), which suggests that various crystalline lithologies in the BM were the dominant sources of USCB sediments.