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F. H. Club Application Form
Application Form Fossil HunterFOSSIL HUNTERS CALENDAR
LOACTION DIGS AND DATESEVENTS CALENDARFossil Pictures
Photo Album Number 1Friends of Fossil Hunters 2000
Web Site DirectoriesRockhounds Web SitesGeological Time periods & Info
Geological Time PeriodsMinerals:
Photo Album Number 2Question of the Months:
January & FebruaryQuestion of the MonthRock Shop of the Month
February 2001Rock Shops|
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| GEOLOGICAL TIME PERIODS EARTH! |
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| Minerals, and Life Forms Development |
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| Precambrian: 570,000,000 to 4,500,000,000 Years Ago Gneiss, granit, anorthosite, metadiabase, metabasalt, metarhyolite, & marble. Building stone: Graphite & sericite. Lower Paleozoic: 430,000,000 to 570,000,000 Years Ago Metamorphic rocks (metasedimentary and meta-igneous); schist, gneiss, quartz, serpentione, slate, and Marble Building Stone: Talc Development of Blue Algie and first Single Cell Corals and higher life form. Cambrian: 500,000,000 to 570,000.000 Years Ago Limestone, dolomite, sandstone, shale, quartzite, and phyllite. Building Stone: Lime Development of Aquatic Salt and fresh water life forms. Ordovician: 430,000,000 to 500,000,000 Years Ago Shale, limestone, dolomite, and sandstone Building Stone: Slate, limestone, zinc, and clay Development of the Great Devonian Sea Silurian: 405,000,000 to 430,000,000 Years Ago Red and gray sandstone, conglomerate, shale, and limestone Building Stone: Lime Development of Fish Devonian 365,000,000 to 405,000,000 Years Ago Red sandstone, gray shale, black shale, limestone, and chert Building Stone: Flagstone, silica sand, clay and lime Pinical of aquatic saltwater life form development Mississippian: 330,000,000 to 365,000,000 Years Ago (Carboniferrious) Red and gray sandstone, shale, and limestone Building Stone: Flagstone, limestone, clay Major shifting of land mass, Start decline of the Devonian Sea. Plant life development. Pennsylvanian: 290,000,000 to 330,000,000 Years Ago (Carboniferrious) Cyclic sequence of sandstone, red and gray shale, conglomerate, clay, coal, and limestone. Building Stone: Coal, clay, and lime Start Development of land life forms and land and air insects Permian: 250,000,000 to 290,000,000 Years Ago Cyclic sequences of shale, sandstone, limestone, and coal Building Stone: Lime and Clay Star development of flying life forms, marsupials and mamels. Triassic: 210,000,000 to 250,000,000 Years Ago Red Sandstone. shale, and conglomerate (green), intruded by diabase (red) Building Stone: Iron Start Development of Dinosaurs. Jurassic: 140,000,000 to 210,000,000 Years Ago Red Sandstone. shale, and conglomerate (green), intruded by diabase (red) Building Stone: Iron Pinical of the Dinosaurs development Cretacious: 67,000,000 to 140,000,000 Years Ago Red Sandstone. shale, and conglomerate (green), intruded by diabase (red) Building Stone: Iron Decline of the Dinosaurs and Start of recorded first of eight Ice Ages. Tertiary 2,000,000 to 67,000,000 Years Ago Sand gravel, silt, and clay Development Stone: Sand and Gravel Sabertooth tigers, wooly Mamoths, Horses, etc. 4,000,000 years ago: Development of the genus Anthrapol ( Neanderthal ) & Homo sapiens (Todays Humans) Quarternary: Present to 2,000,000 Years Ago Sand, gravel and silt Buliding Stone: Sand and gravel Todays world! |
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| Meadville | Pennsylvania | 16335 |
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| Visitors: 06016 |