phanerozoic eon การใช้

• This matches the geologic record of significant extinctions during the Phanerozoic Eon.
• Recently such possible correlation was extended for the whole Phanerozoic Eon.
• In the Sahara they are mostly covered by more recent sediments from the Phanerozoic Eon.
• It marks the end of the Proterozoic Eon, and the beginning of the Phanerozoic Eon.
• These first appear after the boundary between the Proterozoic and Phanerozoic eons or Ediacaran and Cambrian periods.
• The "'Karoo Ice Age "'from 360 260 million years ago ( Mya ) was the second major ice age of the Phanerozoic Eon.
• Rocks produced by the Karoo triple junction are predominantly continental flood basalts, which are usually associated with huge magmatic events during the Phanerozoic eon.
• The ICS and circa 1982 Geologic Time Scale are analyzed for covariant ( equal ) variance intervals and 417Ma is solid within the Phanerozoic Eon.
• The Paleozoic ( " old life " ) era was the first and longest era of the Phanerozoic eon, lasting from 542 to 251 Ma.
• The Phanerozoic Eon, literally the " period of well-displayed life, " marks the appearance in the fossil record of abundant, shell-forming and / or trace-making organisms.
• It is especially helpful as the sole navbox template / place to also simply see all the Precambrian and Phanerozoic Eon's epochs and ages together, and their relationships.
• However, there is a period of biological change which makes this time period a good one to demarkate the Cambrian from the earlier Phanerozoic eon's periods and the Precambrian supereon.
• The following time span from 541 million years ago to the present day is the Phanerozoic Eon, during the earliest period of which, the Cambrian, oxygen-requiring metazoan life forms began to appear.
• The Phanerozoic eon ( the last 540 million years ) marked a rapid growth in biodiversity via the Cambrian explosion a period during which nearly every phylum of multicellular organisms first appeared.
• Connelly argues that the age of this hypothetical impact is approximately 545 mya which puts it just before the Cambrian explosion ( 542 mya ) of the current Phanerozoic eon ( 541 mya ).
• Some sources ( Whiteside et al 2010 ) give a date 201.4 Ma . and is one of the major extinction events of the Phanerozoic eon, profoundly affecting life on land and in the oceans.
• The Caballo Mountains are essentially unique in New Mexico because their section of exposed rocks begins in Precambrian time, and runs through every geological period of the Phanerozoic eon with the exceptions of the Triassic and Jurassic.
• He concentrated on the geology and crustal geophysics that define the products of the last 540 million years of Earth history ( the Phanerozoic eon ), throughout which plate tectonics had produced convergent-plate geologic assemblages like those forming today.
• Utilizing the currently accepted value of 542 Ma, million years ago ) for the beginning of the Cambrian Period, and using 11 geologic periods in the Phanerozoic Eon, an updated value for Woodward s geon would be about 49.4 million years.
• Researchers from Johns Hopkins and the State University of New York at Binghampton have studied this water to learn how the chemistry of the oceans has changed during the Phanerozoic eon, the time of abundant animal life from about 540 million years ago to the present.