Asteriacites and other trace fossils from the Po Formation (Visean-Serpukhovian), Ganmachidam Hill, Spiti Valley (Himalaya) and its paleoenvironmental significance

被引：12
|
作者：
Singh, Birendra P. [1 ]
Bhargava, Om N. [2 ]
Mikulas, Radek [3 ]
Prasad, Subhay K. [1 ]
Singla, Garry [1 ]
Kaur, Ramanpreet [1 ]
机构：
[1] Panjab Univ, Ctr Adv Study Geol CAS, Chandigarh 160014, India
[2] Indian Natl Sci Acad, 103,Sect 7, Panchkula, Haryana, India
[3] Czech Acad Sci, Inst Geol, Rozvojova 269, Prague, Czech Republic
来源：
GEOLOGICA CARPATHICA | 2017年 / 68卷 / 05期
关键词：
Po Formation; Visean-Serpukhovian; Spiti; Trace fossils; Cruziana ichnofacies; SEDIMENTARY STRUCTURES; JAISALMER FORMATION; STROMATOLITE REEF; INDIA; OLD; PLANOLITES; SUPERGROUP; SKOLITHOS; RECOVERY; SETTINGS;
D O I：
10.1515/geoca-2017-0030
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
An assemblage of trace fossils comprising Asteriacites stelliformis, A. quinquefolius, Biformites insolitus, Helminthoidichnites? isp., Lingulichnus isp., Lockeia siliquaria, Palaeophycus tubularis, Planolites isp., Protovirgularia isp. A, Protovirgularia isp. B, Protovirgularia isp. C, Psammichnites isp., Rusophycus isp., and Treptichnus isp. from the Po Formation (Visean-Serpukhovian) exposed along the base of Ganmachidam Hill near the village of Chichong, Spiti Valley in the Himalaya, is described. Storm beds (tempestites) are highly bioturbated. Sedimentary structures such as hummocky cross-stratification (HCS), low-angle planar and trough cross beds, and shallow, slightly asymmetrical gutter casts are observed. The overall trace fossil assemblage indicates the presence of upper shoreface to lower shoreface Cruziana ichnofacies of an open shelf.
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收藏
页码：464 / 478
页数：15
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