8 BIG EVENTS THAT OCCURRED AT THE END OF THE AGE CARTECEOUS
According to Walker and Geissman (2009), Ka? Pur End is the last stage of the life Pratersier covering the time interval anta? Ra 99.6 to 65.5 million years ago. This means that when it takes approximately 34.1 million years. Kala includes six levels sequentially from the old to the young is: Cenomanian (99.6 to 93.5 Mya.), Turonian (93.5 - 89.3 Mya.), Coniacian (89.3 - 85.8 Mya.), Santonian (85.8 - 83.5 Mya.), Campanian (83.5 to 70.6 Mya.) and Maastrichtian (70.6 - 65.5 Mya.). During this period, the climate is warmer than now, although in general show a cooling trend.
Some important geological events occurred in the Late Cretaceous, which include:
Anoxic events that occur at the Cenomanian / Turonian (Bonarelli events) associated with a number of marine species extinction event (Kara? Kitsios DRR., 2007).
A long period of normal polarity on Coniacian (Cretaceous Magnetic Quiet Zone) (Ogg and Bardot, 2001)
Iridium anomaly increased Dras? Tis up to 200 times the normal value at the peak of the Cretaceous Maastrichtian or limit / Tertiary (K / T boundary) (Keller DRR., 2004)
Laramide Orogeny, namely the removal of a massive event on the ham? Pir all parts of the world, among others, form a series of the Himalayas and the Rocky Mountain (De? Celles, 2004).
Giant meteor falling evidenced by the Chicxulub crater in the Yucatan of Mexico with a diameter of about 280 km (Alvarez DRR., 1980) and Shiva crater in the Arabian Sea with a diameter of about 600 km (Nayak, 2002).
Supervolcano erupted in India (Deccan traps) (Nayak, 2002).
Fire, In the Cretaceous in addressing find any indication that a great fire which resulted in the extinction of most organisms. (Monoarfa Marchel, 2014)
Mass extinction of many groups of organisms, including ammonites, genuine, bellemnites, rudistid, and se? Large part of the group of diatoms, dinoflagellates, brakhiopoda, molluscs, echinoid, foraminifera, and nanoplank? Tonnes (Keller DRR., 2004).
According to Walker and Geissman (2009), Ka? Pur End is the last stage of the life Pratersier covering the time interval anta? Ra 99.6 to 65.5 million years ago. This means that when it takes approximately 34.1 million years. Kala includes six levels sequentially from the old to the young is: Cenomanian (99.6 to 93.5 Mya.), Turonian (93.5 - 89.3 Mya.), Coniacian (89.3 - 85.8 Mya.), Santonian (85.8 - 83.5 Mya.), Campanian (83.5 to 70.6 Mya.) and Maastrichtian (70.6 - 65.5 Mya.). During this period, the climate is warmer than now, although in general show a cooling trend.
Some important geological events occurred in the Late Cretaceous, which include:
Anoxic events that occur at the Cenomanian / Turonian (Bonarelli events) associated with a number of marine species extinction event (Kara? Kitsios DRR., 2007).
A long period of normal polarity on Coniacian (Cretaceous Magnetic Quiet Zone) (Ogg and Bardot, 2001)
Iridium anomaly increased Dras? Tis up to 200 times the normal value at the peak of the Cretaceous Maastrichtian or limit / Tertiary (K / T boundary) (Keller DRR., 2004)
Laramide Orogeny, namely the removal of a massive event on the ham? Pir all parts of the world, among others, form a series of the Himalayas and the Rocky Mountain (De? Celles, 2004).
Giant meteor falling evidenced by the Chicxulub crater in the Yucatan of Mexico with a diameter of about 280 km (Alvarez DRR., 1980) and Shiva crater in the Arabian Sea with a diameter of about 600 km (Nayak, 2002).
Supervolcano erupted in India (Deccan traps) (Nayak, 2002).
Fire, In the Cretaceous in addressing find any indication that a great fire which resulted in the extinction of most organisms. (Monoarfa Marchel, 2014)
Mass extinction of many groups of organisms, including ammonites, genuine, bellemnites, rudistid, and se? Large part of the group of diatoms, dinoflagellates, brakhiopoda, molluscs, echinoid, foraminifera, and nanoplank? Tonnes (Keller DRR., 2004).
