GEOL 109 - Continuing Education
... Evolution is the cornerstone for the interpretation of the fossil record and is accepted by virtually all scientists as a fact. Charles Darwin and Alfred R. Wallace recognised the importance of variability in offspring as an important component in the process of natural selection, although the expla ...
... Evolution is the cornerstone for the interpretation of the fossil record and is accepted by virtually all scientists as a fact. Charles Darwin and Alfred R. Wallace recognised the importance of variability in offspring as an important component in the process of natural selection, although the expla ...
Chapter 20: The Earth Through Time
... entire Earth was ice-covered for long periods 600800 My ago. The extensive continental glaciation existed at low latitudes, possibly even at the equator near the end of Proterozoic Eon. Each glacial period lasted for millions of years and ended violently under extreme greenhouse conditions. These cl ...
... entire Earth was ice-covered for long periods 600800 My ago. The extensive continental glaciation existed at low latitudes, possibly even at the equator near the end of Proterozoic Eon. Each glacial period lasted for millions of years and ended violently under extreme greenhouse conditions. These cl ...
chapter9_Proterozoic..
... The Archean-Proterozoic boundary at 2.5 billion years ago marks the approximate time of changes in the style of crustal evolution, ...
... The Archean-Proterozoic boundary at 2.5 billion years ago marks the approximate time of changes in the style of crustal evolution, ...
Archean Plate Tectonics: Isotopic Evidence from Samples of the
... Low-T O isotopes in eclogites C & N isotopes in diamond + Os isotopes in sulfide inclusions MIF sulfur in sulfide inclusions ...
... Low-T O isotopes in eclogites C & N isotopes in diamond + Os isotopes in sulfide inclusions MIF sulfur in sulfide inclusions ...
PLATE TECTONICS: BIRTH OF A THEORY
... These provide strong evidence for seafloor spreading. since 1960s All aspects of earth science re-evaluated within the framework of plate tectonics. ...
... These provide strong evidence for seafloor spreading. since 1960s All aspects of earth science re-evaluated within the framework of plate tectonics. ...
EarthComm_c2s6_185-197
... (Pangea is Greek for “all land.”) About 200 million years ago, it broke into separate continents. The continents then moved apart. Wegener claimed that mountains were formed at the leading edge of the moving continent. He was also able to explain the different ages of the various mountain ranges. He ...
... (Pangea is Greek for “all land.”) About 200 million years ago, it broke into separate continents. The continents then moved apart. Wegener claimed that mountains were formed at the leading edge of the moving continent. He was also able to explain the different ages of the various mountain ranges. He ...
Slajd 1
... old, logos: science) Paleontology deal with fossils (lat. fodere = to dig) Charles Lyell Georges Cuvier ...
... old, logos: science) Paleontology deal with fossils (lat. fodere = to dig) Charles Lyell Georges Cuvier ...
1. Define habitat and describe how geologic processes influence habitats. Habitats
... Both are very geologically active—earthquakes cluster at the ridges and volcanoes are common near trenches. Layers of sediment get thicker and thicker moving away from the mid-ocean ridges (and towards the continents on either side). Also, deep-sea drilling revealed that the oldest, deepest sediment ...
... Both are very geologically active—earthquakes cluster at the ridges and volcanoes are common near trenches. Layers of sediment get thicker and thicker moving away from the mid-ocean ridges (and towards the continents on either side). Also, deep-sea drilling revealed that the oldest, deepest sediment ...
6/page
... trenches The oceanic crust is a thin layer on top of a convecting mantle Continents as rafts of lighter material -‘bump’ into each other, forming compressional mountain ranges and adding new material to continents ...
... trenches The oceanic crust is a thin layer on top of a convecting mantle Continents as rafts of lighter material -‘bump’ into each other, forming compressional mountain ranges and adding new material to continents ...
No Slide Title
... • They all had prokaryotic cells – meaning they lacked a cell nucleus – and lacked other internal cell structures typical of eukaryotic cells (to be discussed later in the term) ...
... • They all had prokaryotic cells – meaning they lacked a cell nucleus – and lacked other internal cell structures typical of eukaryotic cells (to be discussed later in the term) ...
oceanic crust
... • Continental margins generally consist of a gentlysloping continental shelf, and a steeper continental slope, leading to the continental rise, the junction between continental and oceanic crust • Continental shelves make up ~8% of the ocean’s surface area, but are the biologically richest part of t ...
... • Continental margins generally consist of a gentlysloping continental shelf, and a steeper continental slope, leading to the continental rise, the junction between continental and oceanic crust • Continental shelves make up ~8% of the ocean’s surface area, but are the biologically richest part of t ...
The Sea Floor – Chapter 2
... • Continental margins generally consist of a gentlysloping continental shelf, and a steeper continental slope, leading to the continental rise, the junction between continental and oceanic crust • Continental shelves make up ~8% of the ocean’s surface area, but are the biologically richest part of t ...
... • Continental margins generally consist of a gentlysloping continental shelf, and a steeper continental slope, leading to the continental rise, the junction between continental and oceanic crust • Continental shelves make up ~8% of the ocean’s surface area, but are the biologically richest part of t ...
No Slide Title
... radiation in the upper atmosphere • The radiation disrupts water molecules and releases their oxygen and hydrogen • This could account for 2% of present-day oxygen • but with 2% oxygen, ozone forms, creating a barrier against ultraviolet radiation ...
... radiation in the upper atmosphere • The radiation disrupts water molecules and releases their oxygen and hydrogen • This could account for 2% of present-day oxygen • but with 2% oxygen, ozone forms, creating a barrier against ultraviolet radiation ...
Did mantle plume magmatism help trigger the Great Oxidation Event?
... by the Matachewan LIP, we can calculate that the number of moles of O2 produced by these reactions would have 7.72 × 1016. This equates to a mass of O2 of 2.47 × 1015 kg. The mass of the modern atmosphere is approximately 5.15 × 1018 kg (Trenberth and Smith, 2005) of which 23% (1.18 × 1018 kg) is O2 ...
... by the Matachewan LIP, we can calculate that the number of moles of O2 produced by these reactions would have 7.72 × 1016. This equates to a mass of O2 of 2.47 × 1015 kg. The mass of the modern atmosphere is approximately 5.15 × 1018 kg (Trenberth and Smith, 2005) of which 23% (1.18 × 1018 kg) is O2 ...
Continental Drift Reading
... coastlines of South America and Africa looked as though they would fit like adjacent pieces of a jigsaw puzzle. Although his formal profession was meteorology, Wegener had always been curious about the remarkable fit of the coastlines. Was it just a coincidence? He speculated that perhaps the contin ...
... coastlines of South America and Africa looked as though they would fit like adjacent pieces of a jigsaw puzzle. Although his formal profession was meteorology, Wegener had always been curious about the remarkable fit of the coastlines. Was it just a coincidence? He speculated that perhaps the contin ...
ttu_gs0001_000468
... opinions and prejudices about the nature and age of the Earth have waxed and waned through the centuries. Most people, however, appear to have traditionally believed the Earth to be quite young-that its age might be measured in terms of thousands of years, but certainly not in millions. The evidence ...
... opinions and prejudices about the nature and age of the Earth have waxed and waned through the centuries. Most people, however, appear to have traditionally believed the Earth to be quite young-that its age might be measured in terms of thousands of years, but certainly not in millions. The evidence ...
No Slide Title
... • Comparatively simple organic (carbon based) molecules known as microspheres – form spontaneously – show greater organizational complexity – than inorganic objects such as rocks – can even grow and divide in a somewhat organism-like fashion – but their processes are more like random chemical reacti ...
... • Comparatively simple organic (carbon based) molecules known as microspheres – form spontaneously – show greater organizational complexity – than inorganic objects such as rocks – can even grow and divide in a somewhat organism-like fashion – but their processes are more like random chemical reacti ...
EarthComm 8.1
... of basaltic crust eventually formed granites out of the recycled rock. The crust and mantle were most likely far too hot for plate tectonics to operate as they do today. Earth’s oldest continental materials are tiny crystals of zircon. (Its chemical name is zirconium silicate.) Zircon is hard and du ...
... of basaltic crust eventually formed granites out of the recycled rock. The crust and mantle were most likely far too hot for plate tectonics to operate as they do today. Earth’s oldest continental materials are tiny crystals of zircon. (Its chemical name is zirconium silicate.) Zircon is hard and du ...
Science Affiliates Workshop NY Geology Powerpoint
... Geologic Time Scale for the first 3.8 Billion Years of Earth's Existence ...
... Geologic Time Scale for the first 3.8 Billion Years of Earth's Existence ...
Chapter 12 Next Generation Sunshine State Standards
... Nevertheless, based on what we know about other bodies in the solar system—and the 80 or so planets recently discovered orbiting around other stars—Earth is still, by far, the most accommodating. What fortuitous events produced a planet so hospitable to living organisms like us? Earth was not always ...
... Nevertheless, based on what we know about other bodies in the solar system—and the 80 or so planets recently discovered orbiting around other stars—Earth is still, by far, the most accommodating. What fortuitous events produced a planet so hospitable to living organisms like us? Earth was not always ...
Geologic History - Teacher Friendly Guides
... Mountain Building 2: the Paleozoic Overlying the older rock of the Canadian Shield, much of the remaining geologic history of the Midwest records the presence of shallow seas, the formation of the supercontinent Pangaea, and—most recently—the modern ice age. Cambrian deposits are recorded in Wiscons ...
... Mountain Building 2: the Paleozoic Overlying the older rock of the Canadian Shield, much of the remaining geologic history of the Midwest records the presence of shallow seas, the formation of the supercontinent Pangaea, and—most recently—the modern ice age. Cambrian deposits are recorded in Wiscons ...
Types of Fossils - Parkway C-2
... Actual parts of an organism left behind from the past Example: bones, organisms preserved in amber or ice ...
... Actual parts of an organism left behind from the past Example: bones, organisms preserved in amber or ice ...