据美国AAPG2006年第11期报道:在过去10年中,在纽约中南部上奥陶统黑河组横向上不连续的白云岩中发现20多个新的天然气田。白云岩沿着由地震资料可探测出的基底扭断层周围生成。大部分气田位于狭长的断层相连的构造低处,为负向花状构造。在这些断层之外的地层为不渗透灰岩,形成 According to AAPG 2006, No. 11, USA, more than 20 new natural gas fields have been discovered over the past 10 years in the laterally discontinuous dolomites of the Upper Ordovician Heihe Formation in central-southern New York. Dolomites are formed along the basement torsional layer detectable by seismic data. Most of the gas fields are located at the lower tectonic setting where long and narrow faults are connected, forming a negative flowering pattern. Strata beyond these faults are impermeable to limestone formation