North america basement rocks 2005

North america basement rocks 2005. As radiometric ages were determined for the shield-like rocks on the continents which were either exposed at the surface, underlay the flat rocks, or were within the interior of the mountain belts, patterns of age intervals were determined. These old rocks have been called the "basement". This has been interpreted to mean that the continents had somehow grown by development of rock assemblages with these characteristic age parameters. The expanding continental nuclei are part of the "craton" which consist of both exposed and buried basement rocks.
Source: owje.com

Por Carlos Solís
Roman legions camps locations in 80

Roman legions camps locations in 80.

1. Legion IX Hispana: Eboracum (York)
2. Legion XX Valeria Victrix and Legion II Adiutrix: Deva Victrix (Chester)
3. Legion II Augusta: Isca Silurum (Caerleon)
4. Legion XXII Primigenia and Legion X Gemina: Noviomagus (Nijmegen)
5. Legion VI Victrix: Novaesium (Neuss)
6. Legion XXI Rapax: Bonna (Bonn)
7. Legion XIV Gemina: Moguntiacum (Mainz)
8. Legion I Adiutrix: Brigetio (Szöny)
9. Legion VIII Augusta: Argentoratum (Strasbourg)
10. Legion XI Claudia: Vindonissa (Windisch)
11. Legion XV Apollinaris: Carnuntum (Archaeological Park Carnuntum)
12. Legion XIII Gemina: Poetovio (Ptuj)
13. Legion VII Claudia: Viminacium (Kostolac)
14. Legion V Macedonica: Oescus (Gigen)
15. Legion I Italica: Novae (Svishtov)
16. Legion V Alaudae:
17. Legion IV Flavia Felix: Burnum (Kistanje)
18. Legion XIV Flavia Firma: Satala (Sadagh)
19. Legion XII Fulminata: Melitene (Melitene)
20. Legion VI Ferrata: Samosata (Samsat)
21. Legion IV Scythica: Zeugma (Belkis)
22. Legion III Gallica: Raphanaea
23. Legion X: Aelia Capitolina (Jerusalem)
24. Legion XXII Deiotariana: Nicopolis
25. Legion III Cyrenaica: Coptos (Qift)
26. Legion III Augusta: Lambaesis (Tazoult-Lambese)
27. Legion VII Gemina: Legion (Leon)
Source: Panairjdde

Por Carlos Solís
Map of the District of Columbia 1901

Washington, D.C. Portion of "Map of the District of Columbia" No. D-287, Commission on the Improvement of the Park System, 1901 and Map Legend (http://www.lib.utexas.edu/maps/historical/district_of_columbia_1901_key.jpg)
Source: Commission on the Improvement of the Park System, 1901

Por Carlos Solís
Hurricane Hernan (10E) off Mexico

This series of Moderate Resolution Imaging Spectroradiometer (MODIS) images was shows Hurricane Hernan off Baja California. The series begins with an image from Aqua MODIS on September 1, 2002, when the storm was at its peak. Hernan peaked as a Category 5 hurricane with winds of 140 knots (1 knot=1.1 miles per hour). Hernan is the only hurricane so far this season in the Eastern Pacific to reach Category 5 status, out of a total of six hurricanes. Over the next few days, Hernan moved out into the Eastern Pacific away from the coast, and weakened to Category 3 hurricane status with winds of 110 knots). Hurricanes and typhoons are two names for the same phenomenon. the tropical cyclone. The only difference between the two is their location. tropical cyclones in the Eastern Pacific and the Western Atlantic tend to be called hurricanes, while in the Western Pacific they are called typhoons. The Australians call a tropical cyclone a willy-willy or a cyclone. They all follow the same stages (from tropical depression to tropical storm to hurricane / typhoon / willy-willy and back down) and they all last for the same approximate amount of time (from 1 to 30 days). Because hurricane Hernan is in the Northern Hemisphere, it spins counter-clockwise, but were it in the Southern Hemisphere, it would spin clockwise.
Source: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

Por Carlos Solís