Search results
Results from the WOW.Com Content Network
Proterozoic stromatolite microfossils (preserved by permineralization in silica) include cyanobacteria and possibly some forms of the eukaryote chlorophytes (that is, green algae). One genus of stromatolite very common in the geologic record is Collenia.
This is a list of all extinct cyanobacteria genera that formed stromatolites. Collenia; Species Time period Location †C. frequens: Late Proterozoic: Australia
Collenia Temporal range: 2400–2100 Ma Pha. Proterozoic Archean Had. Siderian - Rhyacian Section of Collenia undosa stromatolite from 2110 million year old banded iron formation, Biwabik Collenia undosa stromatolite from Precambrian of United States Scientific classification Domain: Bacteria Phylum: Cyanobacteria Family: Spongiostromata Subfamily: Stromatolithi Genus: † Collenia Walcott ...
The stromatolites found today are almost all carbonate rocks (made of limestone), but these structures are mostly composed of the minerals gypsum and halite (rock salt), Hynek said.
Most archean stromatolites older than 3.0 Ga are found in Australia or South Africa. Stratiform stromatolites from the Pilbara Craton have been identified in the 3.47 Ga Mount Ada Basalt. [59] Barberton, South Africa hosts stratiform stromatolites in the 3.46 Hooggenoeg, 3.42 Kromberg and 3.33 Ga Mendon Formations of the Onverwacht Group.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Pages in category "Stromatolites" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. ...
A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify sexual preferences. According to the document members of pedophilic organizations use of ...