| 词条 | Campur Formation |
| 释义 |
| name = Campur Formation | image = | caption = | type = Formation | age = Turonian-Maastrichtian | period = Coniacian | prilithology = Limestone | otherlithology = Dolomite, conglomerate, siltstone | namedfor = Campur | namedby = Vinson | year_ts = 1962 | region = Alta Verapaz, Petén | country = {{GUA}} | coordinates = {{coord|16.0|N|90.5|W|display=inline,title}} | paleocoordinates = {{coord|24.2|N|80.1|W|display=inline}} | unitof = | subunits = | underlies = Petén Group: Sepur Formation | overlies = Cobán Formation | thickness = | extent = Petén Basin | area = | map = {{Location map+ | Guatemala | relief = 1 | width = 250 | float = center | places = | lat_deg = 16.0 | lon_deg = -90.5 | mark = Lightgreen pog.svg | marksize = 12 }} | map_caption = }} The Campur Formation (Kca) is a geologic formation of the Petén Basin of northern Guatemala. The subtidal limestone preserves fossils dating back to the Late Cretaceous period.[1] DescriptionThe formation consists of fossiliferous limestones with minor levels of dolomites. The formation is rich in rudists and milliolids.[2] Breccias and clayey conglomerates, siltstones and limestones occur in the formation. The formation was probably deposited in a fore-reef environment in an open shelf system.[3] The lower boundary of the Campur Formation is transitional into the underlying Cobán Formation. The formation is overlain by the Sepur Formation of the Petén Group.[4] The Campur Formation is laterally equivalent with the upper part of the Ixcoy Formation of western Guatemala.[5] Fossil contentThe following fossils have been uncovered from the formation:[6][7]
See also{{Portal|Earth sciences|Guatemala|Paleontology|Cretaceous|Prehistory of North America}}
References1. ^Campur Formation at Fossilworks.org 2. ^Machorro Sagastume, 2005, p.11 3. ^Scott, 1995, p.297 4. ^[https://www.mem.gob.gt/wp-content/uploads/2015/06/1.-Cuenca-Peten.pdf Cuenca Petén] - MEM 5. ^Machorro Sagastume, 2005, p.9 6. ^El Ceibo at Fossilworks.org 7. ^Rubelsanto at Fossilworks.org 8. ^Scott, 1995, p.303 9. ^Scott, 1995, p.304 Bibliography
8 : Geology of Guatemala|Cretaceous Guatemala|Limestone formations|Dolomite formations|Conglomerate formations|Shallow marine deposits|Geography of the Alta Verapaz Department|Petén Department |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。