Eon Era Period Epoch And Evolution Of Life Flashcards
4.5 to 3.85 Ga
Hadean eon
13.7 Ga (significant geologic events)
Big bang theory
4.54 GA (Significant geologic events)
Formation of Earth
4.50 GA (significant geologic events)
Formation of moon: the theia hypothesis of great/large impact hypothesis: collision of Mars size asteroid with molten earth
4.4 GA (significant geologic events)
Age of zircon in Jack hills w. Australia (metaseds) oldest material found Fe quartzite, meta conglomerate
4.4 GA (evolution of life)
Formation of carbonate minerals starts depleting atmospheric carbon dioxide
4.4 GA (significant geologic events)
Late heavy bombardment of carbonaceous chondrite
4.03 (significant geologic events)
Acasta gneiss in great slave lake/ slave province Canada, tonalite gneiss-oldest exposed and intact crustal fragment
Eoarchean
3.85 to 3. 6 Ga
Formation of first BIF (Algoma type deposit)
Eoarchean 3.85 to 3.6 Ga
Submarine volcano BIF
Algoma type
Evolution of life: Greenland stromatolite:Chem evidence of life in Greenland
Eoarchean 3.85-3.6 GA
Formation of first theorized supercontinent:Vaalbara
Eoarchean 3.85-3.6 GA
Vaalbara is consist of &
Kaapval craton and pilbara
Completion of vaalbara
3.1 Ga
Paleoarchean
3.6 to 3.2 Ga
Archean stromatolites in hamellin pool, sharks bay, w. Australia
Paleoarchean 3.6 to 3.2 Ga
Mesoarchean
3.2 to 2.8
Appearance of acritarchs
Mesoarchean
Non soluble to acid
Acritarchs
Formation of 2nd supercontinent Ur (2.6 GA)
Mesoarchean 3.2 to 2. 8 GA
Formation of kenorland / kenoran-algoman orogeny
Neoarchean (2.8 to 2.5 GA)
Break up of vaalbara
Neoarchean (2.8-2.5 GA)
Proterozoic
2.5ga to 541 ma
2.5 to 1.6 ga
Paleo proterozoic
Mesoproterozoic
1.6 to 1.0 ga
Neoproterozoic
1.0 to 542 ma
Formation of kenorland (kenoran Algoma orogeny)
Neoarchean (2.8-2.5ga)
Start of fragmentation of kenorland
Paleo proterozoic 2.5-1.6ga
Stops the deposition of Algoma type due to onset of huronian glaciation
Paleo proterozoic
Largest impact crater
Vredefort crater
Occurrence of vredefort crater
Paleo proterozoic
3rd oldest crater occurred during paleo proterozoic
Sudbury crater
2nd largest impact crater at ontario Canada
Sudbury crater
Formation of Columbia or Nina or Hudson land (hudsonian orogeny)
Paleo proterozoic (2.5 to 1.6 ga
GOE date
Paleo proterozoic
Cause of 1st glaciation up to 300 ma
Great oxygenation event
Glaciation caused by GOE
Huronian glaciation
Caused 1st mass extinction in Earth that killed cyanobacteria
GOE
Start of fragmentation of columbia
Mesoproterozoic
Final episode for rodinia assemblage (mesoproterozoic)
Grenville orogeny
Formation of rodinia and ocean miravia
Mesoproterozoic
Appearance of bangiomorpha
Mesoproterozoic
First eukaryote (red algae, 1st know to sexualky reproduce)
Mesoproterozoic
Formation where grypania is found
Negaunee formation
Cryogenian ice age or varagian glaciation (snowball earth)
Neoproterozoic 1.0-542ma
Fragmentation of rodinia
Neoproterozoic
A collective name for fossils such as jellyfish, seapens, segmented worms phylum arthropods
Ediacaran fauna /avalon explosion
Formation of panotia super cook, vendian or greater gondwana or pan African
Neoproterozoic
Fragmentation of panotia caused opening of iapetus ocean. T or f
T
Iapetus ocean disappeared due to Taconic, Acadian, Caledoniaa orogens. T or f
T
Age of invertebrates and golden age of trilobites
Cambrian
6 cont form the break up of pangaea
Gondwana, laurentia, Baltica, Siberia, kazhakstan, china
Laurentia consist of? (4)
N. America, Greenland, Scotland, e. Europe
Baltica consist of(4)
N. Germany, Scandinavia, Russia, Poland
An exlopsive development of new types of animals
Cambrian explosion
First appearance of trilobites, jawless fish, ostracoderms(benthic formas) octopus, clams, snails, mollusks, archeocyathids, first reef builders
Cambrian
First appearance of braciopods, grastropods, echinoderms, ostracods, conodonts, algae, graptolites
Cambrian
Tooth like fossil
Conodonts