- The
Proterozoic (IPA: /ˌproʊtərəˈzoʊɪk, ˌprɒt-, -əroʊ-, -trə-, -troʊ-/ PROH-tər-ə-ZOH-ik, PROT-, -ər-oh-, -trə-, -troh-) is the
third of the four geologic...
- unit of
geologic time,
subdivided into
three eons (Hadean, Archean,
Proterozoic) of the
geologic time scale. It
spans from the
formation of
Earth about...
-
million years ago. It is the last era of the
Precambrian Supereon and the
Proterozoic Eon; it is
subdivided into the Tonian, Cryogenian, and
Ediacaran periods...
- "Meso". CollinsDictionary.com. HarperCollins.
Retrieved 2023-08-30. "
Proterozoic". Merriam-Webster.com Dictionary.
There are
several ways of pronouncing...
- the
planet and
ended 4.0
billion years ago. The
following Archean and
Proterozoic eons
produced the
beginnings of life on
Earth and its
earliest evolution...
-
Anorthosite on
Earth can be
divided into five types: Archean-age
anorthosites Proterozoic anorthosite (also
known as m****if or m****if-type anorthosite) – the most...
- into
three geological time
intervals called eons: Hadean,
Archaean and
Proterozoic. The
latter two are sub-divided into
several eras as
currently defined...
-
sequences with ****ociated
sedimentary rocks that
occur within Archaean and
Proterozoic cratons between granite and
gneiss bodies. The name
comes from the green...
-
years ago (Ma), it
succeeds the
Neoproterozoic (the last era of the
Proterozoic Eon) and ends 251.9 Ma at the
start of the
Mesozoic Era. The Paleozoic...
- west to east: the
Archaean cratonic shields found mostly in the west,
Proterozoic fold
belts in the
centre and
Phanerozoic sedimentary basins, metamorphic...
