Impacts from Space and Mass Extinction Events
Impacts from Space and Mass Extinction Events
A. Understand the concept of a biosphere and Earth System Science and that the biosphere has evolved over time.
-Mass extinction: a crisis that affects life right across the planet from the deepest oceans to the highest mountains
-Biosphere: all life on Earth is a part of the biosphere, a thin layer of life that exists on the surface of the planet and that interacts with the hydrosphere (oceans, lakes, and rivers), the atmosphere, and the lithosphere (the Earth’s crust) evolved through time
-As the components of the biosphere (individual species) evolve or go into extinction over time, the biosphere evolves and changes
B. Distinguish between the oldest and youngest portion of a geological section using the Principles of Superposition, Original Horizontally, and Cross-cutting Relationships.
-Principle of Superposition: A fundamental principle of stratigraphy (the study of rock layers); in a succession of layered rocks, rock layer on the bottom = oldest and rock layer on the top = youngest
-Vertical Sedimentary rocks – containing marine fossils deposited in a DEEP OCEAN about 425 million years ago (Silurian Period) -Tilted Sedimentary rocks – originally deposited in a DESERT 345 million years ago (Devonian Period) -Cross Cutting UNCONFORMITY – a period of non-deposition or active erosion
C. Describe concept of faunal succession and use of fossils in correlation and in the subdivision of Earth history.
-Principle of Faunal Succession: Strata of like age can be recognized by the fossils they contain even if the outcrops of strata are separated by large distances geographically, this only works because species have evolved through time older forms of life die out and new forms develop
-Using the appearance and disappearance of fossils to subdivide geological time is the science of biostratigraphy
D. Recognize the qualities that make fossils useful in biostratigraphy.
-Biostratigraphy: each fossil
A. Understand the concept of a biosphere and Earth System Science and that the biosphere has evolved over time.
-Mass extinction: a crisis that affects life right across the planet from the deepest oceans to the highest mountains
-Biosphere: all life on Earth is a part of the biosphere, a thin layer of life that exists on the surface of the planet and that interacts with the hydrosphere (oceans, lakes, and rivers), the atmosphere, and the lithosphere (the Earth’s crust) evolved through time
-As the components of the biosphere (individual species) evolve or go into extinction over time, the biosphere evolves and changes
B. Distinguish between the oldest and youngest portion of a geological section using the Principles of Superposition, Original Horizontally, and Cross-cutting Relationships.
-Principle of Superposition: A fundamental principle of stratigraphy (the study of rock layers); in a succession of layered rocks, rock layer on the bottom = oldest and rock layer on the top = youngest
-Vertical Sedimentary rocks – containing marine fossils deposited in a DEEP OCEAN about 425 million years ago (Silurian Period) -Tilted Sedimentary rocks – originally deposited in a DESERT 345 million years ago (Devonian Period) -Cross Cutting UNCONFORMITY – a period of non-deposition or active erosion
C. Describe concept of faunal succession and use of fossils in correlation and in the subdivision of Earth history.
-Principle of Faunal Succession: Strata of like age can be recognized by the fossils they contain even if the outcrops of strata are separated by large distances geographically, this only works because species have evolved through time older forms of life die out and new forms develop
-Using the appearance and disappearance of fossils to subdivide geological time is the science of biostratigraphy
D. Recognize the qualities that make fossils useful in biostratigraphy.
-Biostratigraphy: each fossil