chapter 9 - Geoclassroom Home
... cycles in Precambrian rocks. Some geologists think the Wopmay orogen represents a Wilson cycle. Evidence for the opening of an ocean basin include sandstonecarbonate-shale assemblages (a passive margin sedimentary sequence), while ophiolites indicate subduction, or the closing of an ocean basin. ...
... cycles in Precambrian rocks. Some geologists think the Wopmay orogen represents a Wilson cycle. Evidence for the opening of an ocean basin include sandstonecarbonate-shale assemblages (a passive margin sedimentary sequence), while ophiolites indicate subduction, or the closing of an ocean basin. ...
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... worldwide. These organisms were all small, had thin bodies with a quilted outer surface, and lacked any internal or external hard parts. Specimens about 4 to5 cm in length. ...
... worldwide. These organisms were all small, had thin bodies with a quilted outer surface, and lacked any internal or external hard parts. Specimens about 4 to5 cm in length. ...
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... I. Introduction A. Proterozoic Eon began 2.5 billion years ago and ended only 544 million years ago. 1. comprises 42% of Earth history 2. designation of the beginning of the Proterozoic is somewhat arbitrary, a more modern style of plate tectonics and sedimentation began to be prevalent 3. less alte ...
... I. Introduction A. Proterozoic Eon began 2.5 billion years ago and ended only 544 million years ago. 1. comprises 42% of Earth history 2. designation of the beginning of the Proterozoic is somewhat arbitrary, a more modern style of plate tectonics and sedimentation began to be prevalent 3. less alte ...
6_GC1_AtmosOceanCon..
... - These minerals are insoluble (can’t be dissolved) in absence of oxygen - Uraninite and pyrite disappeared after 2.3 Ga • Banded iron formation ...
... - These minerals are insoluble (can’t be dissolved) in absence of oxygen - Uraninite and pyrite disappeared after 2.3 Ga • Banded iron formation ...
GEOLOGIC TIME SCALE
... It is mainly based on rock and fossil evidence. EXAMPLE: Major group of organisms becomes extinct new time interval (66 million years age = end of the Mesozoic Era or beginning of the Cenozoic Era) Dinosuars became extinct (no more fossils) ...
... It is mainly based on rock and fossil evidence. EXAMPLE: Major group of organisms becomes extinct new time interval (66 million years age = end of the Mesozoic Era or beginning of the Cenozoic Era) Dinosuars became extinct (no more fossils) ...
notes
... Marine invertebrates diversified; most animal phyla evolved Anaerobic, then photosynthetic prokaryotes; eukaryotes, then multicellular life ...
... Marine invertebrates diversified; most animal phyla evolved Anaerobic, then photosynthetic prokaryotes; eukaryotes, then multicellular life ...
Chapter 17 The History of Life
... Marine invertebrates diversified; most animal phyla evolved Anaerobic, then photosynthetic prokaryotes; eukaryotes, then multicellular life ...
... Marine invertebrates diversified; most animal phyla evolved Anaerobic, then photosynthetic prokaryotes; eukaryotes, then multicellular life ...
GEOLOGIC TIME
... GEOLOGIC TIME • Based on fossil evidence and mass extinctions • Life forms have evolved over time • 4 MAJOR ERAS ...
... GEOLOGIC TIME • Based on fossil evidence and mass extinctions • Life forms have evolved over time • 4 MAJOR ERAS ...
video slide
... • The oldest known fossils are stromatolites, rock-like structures made of many layers of photosynthesizing bacteria and sediment • Stromatolites date back 3.5 billion years ago • Prokaryotes were Earth’s only living residents from 3.5 to about 2.1 billion years ago ...
... • The oldest known fossils are stromatolites, rock-like structures made of many layers of photosynthesizing bacteria and sediment • Stromatolites date back 3.5 billion years ago • Prokaryotes were Earth’s only living residents from 3.5 to about 2.1 billion years ago ...
The Hadean Outline •Theories on Formation of Solar System, Universe
... • Hadean Eon – – Earth’s formation prior to solidification of crust (4.6-4.0 Bya/ga) • Archean Eon – – After Hadean – ~4+ billion years ago – Ends at beginning of 2.5 billion years ago (Proterozoic Eon) • Proterozoic Eon – – Begins 2.5 billion years ago – Ends at 542 million years ago (beginning of ...
... • Hadean Eon – – Earth’s formation prior to solidification of crust (4.6-4.0 Bya/ga) • Archean Eon – – After Hadean – ~4+ billion years ago – Ends at beginning of 2.5 billion years ago (Proterozoic Eon) • Proterozoic Eon – – Begins 2.5 billion years ago – Ends at 542 million years ago (beginning of ...
History of Life on Earth
... ● The prokaryotic ancestors of mitochondria and plastids probably gained entry to the host cell as undigested prey or internal parasites ● In the process of becoming more interdependent, the host and endosymbionts would have become a single organism ● Serial endosymbiosis supposes that mitochondria ...
... ● The prokaryotic ancestors of mitochondria and plastids probably gained entry to the host cell as undigested prey or internal parasites ● In the process of becoming more interdependent, the host and endosymbionts would have become a single organism ● Serial endosymbiosis supposes that mitochondria ...
Photosynthesis and the Earth
... But the O2 didn’t build up in the atmosphere yet. Where did it go? It dissolved in the oceans and oxidized the iron that was also dissolved in the water and precipitate onto the sea bed. These are the most important iron ores, for us, we get most of our steel from these ores…thanks to photosynthetic ...
... But the O2 didn’t build up in the atmosphere yet. Where did it go? It dissolved in the oceans and oxidized the iron that was also dissolved in the water and precipitate onto the sea bed. These are the most important iron ores, for us, we get most of our steel from these ores…thanks to photosynthetic ...
Ch 14 Notes - OCPS TeacherPress
... Many scientists think that modern prokaryotes called Archaea are the closest relatives of Earth’s first cells. Photosynthesizing Prokaryotes Fossil evidence of cyanobacteria has been found in rocks as old as 3.5 billion years. Cyanobacteria eventually produced enough oxygen to support the form ...
... Many scientists think that modern prokaryotes called Archaea are the closest relatives of Earth’s first cells. Photosynthesizing Prokaryotes Fossil evidence of cyanobacteria has been found in rocks as old as 3.5 billion years. Cyanobacteria eventually produced enough oxygen to support the form ...
Chapter 26
... Replication and metabolism are essential for life Protobionts: aggregates of abiotically produced molecules surrounded by a membrane or membrane-like structure. Exhibit some properties of life and could have ...
... Replication and metabolism are essential for life Protobionts: aggregates of abiotically produced molecules surrounded by a membrane or membrane-like structure. Exhibit some properties of life and could have ...