Mesoproterozoic Era
E45387
The Mesoproterozoic Era was a middle division of Earth's Proterozoic Eon characterized by the stabilization of continental cratons, widespread sedimentary basin development, and significant evolutionary advances in eukaryotic life.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
geologic era
→
subdivision of the Proterozoic Eon → |
| associatedWith |
Grenville orogeny
→
continental collision events → growth of continental crust → |
| atmosphericCondition |
oxygen levels lower than modern atmosphere
→
relatively stable oxygen levels compared to Paleoproterozoic → |
| biologicalSignificance |
appearance of complex multicellular eukaryotes
→
development of more complex protistan ecosystems → diversification of eukaryotes → expansion of photosynthetic eukaryotic algae → |
| characterizedBy |
assembly of the supercontinent Rodinia
→
evolutionary advances in eukaryotic life → extensive platform cover sediments → large passive continental margins → rifting and breakup of earlier supercratons → stabilization of continental cratons → widespread sedimentary basin development → |
| chronostratigraphicUnit |
Erathem
→
|
| climate |
absence of global-scale Snowball Earth glaciations
→
generally warm climate → |
| contains |
Calymmian Period
→
Ectasian Period → Stenian Period → |
| definedBy |
absolute age boundaries at 1600 Ma and 1000 Ma
→
|
| duration |
approximately 600 million years
→
|
| economicSignificance |
deposition of important sediment-hosted mineral deposits
→
formation of some large iron and base metal deposits → |
| end |
1000 million years ago
→
|
| followedBy |
Neoproterozoic Era
→
|
| follows |
Paleoproterozoic Era
→
|
| geochronologicRank |
era
→
|
| notableEvent |
early stages of Rodinia supercontinent assembly
→
onset and development of the Grenville orogenic cycle → stabilization of many shield areas → |
| paleogeography |
development of large shallow epicontinental seas
→
dominance of stable cratonic blocks → |
| partOf |
Proterozoic Eon
→
|
| positionInPrecambrian |
middle era of the Proterozoic Eon
→
part of the Precambrian Supereon → |
| precededBy |
Great Oxidation Event
→
|
| sedimentaryRecord |
abundant stromatolitic carbonates
→
extensive siliciclastic successions → large, long-lived basins → |
| start |
1600 million years ago
→
|
| timeScaleStandard |
International Commission on Stratigraphy
→
|
Referenced by (4)
| Subject (surface form when different) | Predicate |
|---|---|
|
Precambrian Supereon
→
|
contains |
|
Neoproterozoic Era
→
|
follows |
|
Paleoproterozoic Era
→
|
precedes |
|
Proterozoic Eon
→
|
subdivision |