Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Assimilation (1)
- Astronomy (1)
- Biology (1)
- Chassignite (1)
- Curiosity (1)
-
- Ecology (1)
- GIS (1)
- Gale Crater (1)
- Gediz Vallis (1)
- Genealogy (1)
- Genetic drift (1)
- Geology (1)
- HiRISE (1)
- Hydrology (1)
- Igneous petrology (1)
- Lesson (1)
- Mars (1)
- Melt inclusion (1)
- Meteorites (1)
- Mitochondrial Eve (1)
- Mutation (1)
- Nakhlite (1)
- Natural selection (1)
- Phylogeny (1)
- Teacher Resource (1)
- Y Chromosome Adam (1)
- Publication
- Publication Type
Articles 1 - 4 of 4
Full-Text Articles in Astrophysics and Astronomy
Genealogical Vs Phylogenetic Mutation Rates: Answering A Challenge, Robert Carter
Genealogical Vs Phylogenetic Mutation Rates: Answering A Challenge, Robert Carter
Proceedings of the International Conference on Creationism
There is a discrepancy between the mutation rate we can measure today and the rate at which evolution is supposed to have proceeded. The former is sometimes called the genealogical mutation rate, for it is obtained by comparing individuals whom we know to be related. The latter is sometimes called the phylogenetic mutation rate. It is calculated by counting the fixed differences between two species and dividing by the estimated time since their common ancestor. Genealogical mutation rates are generally several orders of magnitude faster than phylogenetic estimates. This causes problems for the evolutionary model. For example, using the genealogical …
Magmatic Processes Leading To Compositional Diversity In The Mars Crust, Amanda Marie Ostwald
Magmatic Processes Leading To Compositional Diversity In The Mars Crust, Amanda Marie Ostwald
UNLV Theses, Dissertations, Professional Papers, and Capstones
The ancient Mars crust can yield insights into planet formation and evolution that Earth cannot. Direct investigation of the martian surface is limited to studies on meteorites and rover-obtained analyses. The nakhlites and chassignites, two classes of martian meteorites, are together the largest suite of martian meteorites derived from a single location on the surface. As such, they present a rare opportunity to study the Mars crust in detail using samples bearing a contextual relationship. Rover studies have found a surprising amount of compositional diversity in surface materials, the formation mechanisms of which are not well-constrained. This dissertation leverages meteorites …
Lesson Plans In Astronomy, Ecology And Biology, Admin Stem For Success
Lesson Plans In Astronomy, Ecology And Biology, Admin Stem For Success
STEM for Success Showcase
This document contains various lesson plan ideas for concepts within the fields of biology, ecology, astronomy, and geology.
Delineating A Stream Network At Gale Crater, Mars, On Arcgis Pro: A Geographic Information Systems Approach, Elpidio Guzman De La Cruz
Delineating A Stream Network At Gale Crater, Mars, On Arcgis Pro: A Geographic Information Systems Approach, Elpidio Guzman De La Cruz
West Chester University Master’s Theses
The northwestern region of the Gale crater experienced flooding in the past. Delineation of stream networks for the northwestern region of Gale Crater, Mars employing geographic information systems (GIS) techniques is applied. The stream network produced by the algorithm in the study traverses the clay unit in Gediz Vallis, and visual HiRISE imagery analysis correlates with a topologic cross section of an inverted river channel of 750 meters wide and 90 meters deep. HiRISE imagery analysis further confirms a sulfate and clay stratigraphic unit in a stream 125 meters wide and 25 meters deep. Lastly, data smoothing procedures in the …