1篇
您的检索式：作者名="Susan M.Rimmer"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Migmatite-like textures in anthracite:Further evidence for low-grade metamorphic melting and resolidification in high-rank coals显示文摘Previous studies demonstrated that melting,initiated by supercritical fluids in the 375-400℃range,occurred as part of anthracite metamorphism in the Appalachian Basin.Based on the known behavior of vitrinite at high temperatures and,to a lesser extent,at high pressures,it was determined that the duration of the heating,melting,and resolidification event was about 1 h.In the current study,featureless vitrinite within banded maceral assemblages demonstratesthe intimate association of melted and resolidified vitrinite with anthracite-rank macerals.By analogy with metamorphosed inorganic rocks,such associations represent diadysites and embrechites,i.e.,cross-cutting and layered migmatites,respectively.Even though the temperature of formation of the anthracite structures is several hundred℃lower than that seen in metamorphosed inorganic rocks,anthracites are metamorphic rocks and the nomenclature for metamorphic rocks may be appropriate for coal. | James C.Hower Susan M.Rimmer Maria Mastalerz Nicola J.Wagner | 2021 | Geoscience Frontiers2021，12，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员