| 甘肃平凉地区平凉组笔石带的商榷 |
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| 引用本文： | 宋礼生.甘肃平凉地区平凉组笔石带的商榷[J].甘肃地质学报,1996,5(2):1-10. |
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| 作者姓名： | 宋礼生 |
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| 作者单位： | 西安地质矿产研究所 |
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| 摘 要： | 平凉地区中奥陶统平凉组地层发育基本完整，生物带发育齐全。在平凉组剖面中建立了３个笔石带，除底带引用前人资料外，对其上的２个带及其各自包括的３个系列作了重新划分及论述
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| 关 键 词： | 序列 类型 系列 主导种 |
DISCUSSIONS ON GRAPTOLITE ZONES OF PINGLIANG FORMATION IN PINGLIANG REGION, GANSU |
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| Song Lisheng.DISCUSSIONS ON GRAPTOLITE ZONES OF PINGLIANG FORMATION IN PINGLIANG REGION, GANSU[J].Acta Geologica Gansu,1996,5(2):1-10. |
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| Authors: | Song Lisheng |
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| Institution: | Song Lisheng (Xi’ an Institute of Geology and Mineral Resources, CAGS Xi’ an 710054) |
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| Abstract: | In this paper,the graptolite zones of Pingliang formation of Pingliang region are divided into three zones, which are listed as follows: 1.Climacograptus peltifer-C. bicornis zone 2.Nemagraptus gracilis zone 3.Glyptograptus teretiusculus zone The 2 and 3 zones each, except 1 zone, contain three series, id est: 1.Climcograptus peltifer-C. bicornis zone (1) C. peltifer Lapworth- C. bicornis (Hall) series (2) Amphigraptus divergens (Hall) series (3) Dicranograptus brevicaulis Elles et Wood- D. sinensis Ge series 2 Nemagraptus gracilis zone (1) N. gracilis Hall -N. remosus Elles et Wood series (2) Geitonograptus linealis (Ruedemann) series (3) Pseudoclimacograptus scharenbergi Lapworth series |
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| Keywords: | Seguence Kind Series Leading species |
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