晚白垩世西峡盆地和夏馆盆地古地震事件的发现及意义
|
摘要
以大量的野外工作为基础,辅以地球化学研究,确定了西峡盆地和夏馆盆地普遍存在着古地震事件的物质记录。同沉积期古地震事件主要表现为同沉积小断裂、同沉积角砾岩层等,且同沉积地震事件对于河流侵蚀作用的产生具有重要的影响;成岩期古地震事件主要表现为沿断裂上盘砾岩的"涂抹"和成岩期形成的方解石擦磨晶体,以及由断裂(裂隙)所围限的不同于周侧岩性的块体。古地震事件的研究不仅可以为恐龙蛋的埋藏作用提供信息,也可以为研究古地理和古构造背景提供信息。
The palaeoseismic events in the Late Cretaceous Xixia and Xiaguan Basin may fall into two categories: synsedimentary and diagenetic.The synsedimentary palaeoseismic events led to the formation of synsedimentary faults and breccias horizons,and exercised an important effect on the erosion of rivers.The diagenetic palaeoseismic events are manifested in the "smear" phenomena of conglomerates along the hanging wall of faults,rubbing of calcite crystals,and fault-bounded blocks which are different from the surrounding rocks.The study in this paper may provide useful approaches not only to the burial of dinosaur eggs but also to palaeogeography and palaeotectonic settings.
The palaeoseismic events in the Late Cretaceous Xixia and Xiaguan Basin may fall into two categories: synsedimentary and diagenetic.The synsedimentary palaeoseismic events led to the formation of synsedimentary faults and breccias horizons,and exercised an important effect on the erosion of rivers.The diagenetic palaeoseismic events are manifested in the "smear" phenomena of conglomerates along the hanging wall of faults,rubbing of calcite crystals,and fault-bounded blocks which are different from the surrounding rocks.The study in this paper may provide useful approaches not only to the burial of dinosaur eggs but also to palaeogeography and palaeotectonic settings.
引文
[1]王德有,周世全.西峡盆地新类型恐龙蛋的发现[J].河南地质1,995,13(4):262-267.
[2]周世全,梁新权,冯祖杰.河南西南部含恐龙蛋化石盆地沉积及构造特征[J].大地构造与成矿学,20022,6(3):306-313.
[3]张国成,郭卫星,曾玉凤.河南西峡盆地上白垩统河流及湖泊沉积中的遗迹组构[J].古地理学报,20046,(4):434-441.
[4]宋慧波,胡斌,王德有等.河南西峡盆地上白垩统高沟组沉积特征与沉积环境[J].石油地质与工程,20082,2(4):1-6.
[5]梁定益,聂泽同,宋志敏等.正在萌芽段的震积地层学[J].高校地质学报,1997,3(4):458-561.
[6]SELIACHER A.Fault-graded beds interpreted as seismites[J].Sedimentology1,969,13(1-2):155-159.
[7]乔秀夫.中国震积岩的研究与展望[J].地质论评,1996,42(4):317-320.
[8]袁静.中国震积作用和震积岩研究进展[J].石油大学学报(自然科学),2005,29(1):144-149.
[9]吴贤涛,尹国勋.四川峨眉晚侏罗世湖泊沉积中震积岩的发现及其意义[J].沉积学报1,992,10(3):19-24.
[10]KEITH M H,WEBER J N.Isotopic composition and environmentalclassification of selected limestones and fossils[J].Geochimica etCosmochimica Acta,1964,28:1787-1816.
[11]AYDINA,AHMADOVR.Bed-parallel compaction bandsin aeoliansandstone:Their identification,characterization and implications[J].Tectonophysics,2009,479:277-284.
[12]周世全,李占杨,冯祖杰等.河南西峡盆地恐龙蛋化石及埋藏特征[J].现代地质1,999,13(3):298-330.
[13]周世全,朱广彬,冯祖杰.河南内乡夏馆—高丘盆地的夏馆组及其时代[J].资源调查与环境,20032,4(1):69-74.
[14]李艳芳,蔡厚安,梁汉东等.西峡晚白垩世恐龙蛋化石宏观矿物组成研究及意义[J].吉林大学学报(地球科学版),2006,36(2):158-168.
[15]冯伟民,郑永飞,周建波.大别-苏鲁造山带大理岩碳氧同位素地球化学研究[J].岩石学报2,003,19(3):468-478.
[2]周世全,梁新权,冯祖杰.河南西南部含恐龙蛋化石盆地沉积及构造特征[J].大地构造与成矿学,20022,6(3):306-313.
[3]张国成,郭卫星,曾玉凤.河南西峡盆地上白垩统河流及湖泊沉积中的遗迹组构[J].古地理学报,20046,(4):434-441.
[4]宋慧波,胡斌,王德有等.河南西峡盆地上白垩统高沟组沉积特征与沉积环境[J].石油地质与工程,20082,2(4):1-6.
[5]梁定益,聂泽同,宋志敏等.正在萌芽段的震积地层学[J].高校地质学报,1997,3(4):458-561.
[6]SELIACHER A.Fault-graded beds interpreted as seismites[J].Sedimentology1,969,13(1-2):155-159.
[7]乔秀夫.中国震积岩的研究与展望[J].地质论评,1996,42(4):317-320.
[8]袁静.中国震积作用和震积岩研究进展[J].石油大学学报(自然科学),2005,29(1):144-149.
[9]吴贤涛,尹国勋.四川峨眉晚侏罗世湖泊沉积中震积岩的发现及其意义[J].沉积学报1,992,10(3):19-24.
[10]KEITH M H,WEBER J N.Isotopic composition and environmentalclassification of selected limestones and fossils[J].Geochimica etCosmochimica Acta,1964,28:1787-1816.
[11]AYDINA,AHMADOVR.Bed-parallel compaction bandsin aeoliansandstone:Their identification,characterization and implications[J].Tectonophysics,2009,479:277-284.
[12]周世全,李占杨,冯祖杰等.河南西峡盆地恐龙蛋化石及埋藏特征[J].现代地质1,999,13(3):298-330.
[13]周世全,朱广彬,冯祖杰.河南内乡夏馆—高丘盆地的夏馆组及其时代[J].资源调查与环境,20032,4(1):69-74.
[14]李艳芳,蔡厚安,梁汉东等.西峡晚白垩世恐龙蛋化石宏观矿物组成研究及意义[J].吉林大学学报(地球科学版),2006,36(2):158-168.
[15]冯伟民,郑永飞,周建波.大别-苏鲁造山带大理岩碳氧同位素地球化学研究[J].岩石学报2,003,19(3):468-478.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心