Matches in SemOpenAlex for { <https://semopenalex.org/work/W1879508623> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W1879508623 endingPage "717" @default.
- W1879508623 startingPage "705" @default.
- W1879508623 abstract "Abstract Devonian rocks in Colombia occur mainly in the Cordillera Oriental and the Sierra de Perija. Thicknesses of complete sections vary from 200 to 800 m; lithologies are typically shale and siltstone with subordinate sandstone. The base of the Devonian section is an angular unconformity above igneous and metamorphic rocks (including Ordovician metasediments). The top of the Devonian appears to be conformable with Carboniferous rocks. Typical sections are sparsely fossiliferous. Bryozoans, brachiopods, corals, trilobites, and gastropods are the most common fossils. These marine faunas occur mainly in the lower part of the Devonian. Brachiopods indicate a late Emsian to Eifelian age for the fossiliferous zones. The upper part of the Devonian section in Colombia may be nonmarine, but diagnostic fossils are rare, and therefore the top of the Devonian is not well dated. Devonian sediments apparently formed in a north-south epicontinental basin. The Emsian and Eifelian strata lie unconformably on a terrain that includes metamorphosed Ordovician rocks with K-Ar dates indicating uplift and cooling in the Silurian. The lack of known Silurian sedimentary rocks (except to the northeast in the Merida Andes of Venezuela), coupled with the radiometric dates, indicates a post-Ordovician and pre-Emsian tectonic and thermal event of unknown origin along the continental margin as far south as Ecuador." @default.
- W1879508623 created "2016-06-24" @default.
- W1879508623 creator A5069354730 @default.
- W1879508623 date "1988-01-01" @default.
- W1879508623 modified "2023-09-23" @default.
- W1879508623 title "The Devonian System in Colombia" @default.
- W1879508623 hasPublicationYear "1988" @default.
- W1879508623 type Work @default.
- W1879508623 sameAs 1879508623 @default.
- W1879508623 citedByCount "3" @default.
- W1879508623 countsByYear W18795086232012 @default.
- W1879508623 countsByYear W18795086232021 @default.
- W1879508623 crossrefType "journal-article" @default.
- W1879508623 hasAuthorship W1879508623A5069354730 @default.
- W1879508623 hasConcept C107832698 @default.
- W1879508623 hasConcept C109007969 @default.
- W1879508623 hasConcept C122792734 @default.
- W1879508623 hasConcept C127313418 @default.
- W1879508623 hasConcept C146588470 @default.
- W1879508623 hasConcept C149918038 @default.
- W1879508623 hasConcept C151730666 @default.
- W1879508623 hasConcept C187359657 @default.
- W1879508623 hasConcept C191735495 @default.
- W1879508623 hasConcept C2779004622 @default.
- W1879508623 hasConcept C2779837711 @default.
- W1879508623 hasConcept C61721801 @default.
- W1879508623 hasConcept C6494504 @default.
- W1879508623 hasConcept C91442348 @default.
- W1879508623 hasConcept C97316735 @default.
- W1879508623 hasConceptScore W1879508623C107832698 @default.
- W1879508623 hasConceptScore W1879508623C109007969 @default.
- W1879508623 hasConceptScore W1879508623C122792734 @default.
- W1879508623 hasConceptScore W1879508623C127313418 @default.
- W1879508623 hasConceptScore W1879508623C146588470 @default.
- W1879508623 hasConceptScore W1879508623C149918038 @default.
- W1879508623 hasConceptScore W1879508623C151730666 @default.
- W1879508623 hasConceptScore W1879508623C187359657 @default.
- W1879508623 hasConceptScore W1879508623C191735495 @default.
- W1879508623 hasConceptScore W1879508623C2779004622 @default.
- W1879508623 hasConceptScore W1879508623C2779837711 @default.
- W1879508623 hasConceptScore W1879508623C61721801 @default.
- W1879508623 hasConceptScore W1879508623C6494504 @default.
- W1879508623 hasConceptScore W1879508623C91442348 @default.
- W1879508623 hasConceptScore W1879508623C97316735 @default.
- W1879508623 hasLocation W18795086231 @default.
- W1879508623 hasOpenAccess W1879508623 @default.
- W1879508623 hasPrimaryLocation W18795086231 @default.
- W1879508623 hasRelatedWork W1496611428 @default.
- W1879508623 hasRelatedWork W1554793563 @default.
- W1879508623 hasRelatedWork W1569077964 @default.
- W1879508623 hasRelatedWork W2025362310 @default.
- W1879508623 hasRelatedWork W2080420510 @default.
- W1879508623 hasRelatedWork W2082981851 @default.
- W1879508623 hasRelatedWork W2105604547 @default.
- W1879508623 hasRelatedWork W2110347388 @default.
- W1879508623 hasRelatedWork W2126854871 @default.
- W1879508623 hasRelatedWork W2162024453 @default.
- W1879508623 hasRelatedWork W2216913935 @default.
- W1879508623 hasRelatedWork W2219109592 @default.
- W1879508623 hasRelatedWork W2242650072 @default.
- W1879508623 hasRelatedWork W2263836035 @default.
- W1879508623 hasRelatedWork W2379806653 @default.
- W1879508623 hasRelatedWork W2444532642 @default.
- W1879508623 hasRelatedWork W2473961972 @default.
- W1879508623 hasRelatedWork W2908636933 @default.
- W1879508623 hasRelatedWork W3133281445 @default.
- W1879508623 hasRelatedWork W3148754101 @default.
- W1879508623 isParatext "false" @default.
- W1879508623 isRetracted "false" @default.
- W1879508623 magId "1879508623" @default.
- W1879508623 workType "article" @default.