40 Mya to 35 Mya

40 Mya to 35 Mya

37.8 Mya, Paleogene, Eocene, Priabonian: Moderate cooling.

35 Mya to 30 Mya

 35 Mya to 30 Mya

33.9, Paleogene, Oligocene, Rupelian: Diversification of mammals. Major evolution and dispersal of modern types of flowering plants,

25 Mya to 20 Mya

 25 Mya to 20 Mya

25,000,000 BP: what we have called the Laramide Revolution shook the Earth. It raised what is now the US state of New Mexico from below sea level to above sea level and so began a period of volcanism.

20.44 Mya, Burdigalian: Orogeny in northern Hemisphere. Start of Kaikoura Orogeny forming S0uthern Alps in New Zealand. Widespread forests slowly draw in massive amounts of CO2 gradually the level of atmospheric CO2.

23.03 Mya, Aquitanian: From a 6500 pmv CO2 level to around 100 ppmv during the Miocene. Modern mammal and bird families become recognizable. Horses and mastodons diverse. Grasses become ubiquitous.

20 Mya to 15 Mya

 20 Mya to 15 Mya

15.97 Mya, Neogene, Miocene, Langhain: Extinctions in Middle Miocene disruption.

100,000,000 BP to 50,000,000 BP  

 

 

 67,000,000 BP: An extraterrestrial object struck the Earth and marked the end of the the Cretaceous period and the beginning of the Tertiary period.

c.65,000,000 BP: It is said that a comet did enormous damage to our Earth. About this time an extraterrestrial object struck Earth and marked the end of the Cretaceous period and  the beginning of the Tertiary Period.

 

 

 5.33 Mya: The Zanclean flood may have been about this time.

 

50,000,000 BP: Evidence of cave art.   

~ Canada: About this time there was a massive explosive volcanic eruption near what is now Bennett Lake, Brittsh Columbia, Yukon Canada.

30 Mya to 25 Mya

30 Mya to 25 Mya

28.1 Mya, Paleogene, Oligocene Chatian: Ancestor of apes and humans. Grande Coupure extinctinction.  Start of widespread Antarctic glaciation. Rapid evolution and diversification of fauna, especially mammals.

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27,000,000 BP, USA: A volcanic eruption at what is now La Garita Caldera site of the San Juan volcanic field in Colorado. Approximate ejecta bulk volume: 5,000 km cubed.

~ USA: The Laramide Revolution shook the Earth. It raised the US state of New Mexico above sea level and began a period of Volcanism.

25,000,000 BP, USA: In the Laramide Revolution the land of what is now New Mexico was raised above sea-level and began a period of volcanism

10,000,000 BP to 1,000,000 BP 

7,246,000 Mya, Neogene, Miocene, Messinian: Messinian Event with hypersaline lakes in empty Mediterranean Basin. Moderate icehouse(?)climate, punctuated by ice ages and reestablishment of East Antarctic Ice Sheet.                                                

 

6,400,000 BP: Heise volcanic field. Yellowstone hotspot. Walcott Tuff. Idaho, US. Ejecta volume was about 750 km3.

  

6 Mya: Giants similar to humans began to flourish on Earth about this time and were still in evidence to about 200,000 BP. They seem to have survived some cold times. I imagine that the great Ice Age got their attention.

 

2.6 Mya to 12,000 BP: This time marks the duration of the Pleistocene Epoch

~ The Pleistocene is followed by the Holocene Epoch. As I remember the Holocene is the geological Epoch in which we are living.

2.58 Mya: Phanerozoic Eon, Cenozoic Era, Quaternary Period, Pleistocene Epoch, Gelasian Age: Start of Quaternary glaciations.Rise of the Pleistocene about 2,580,000 years ago or years before the present. 

 

2.48 Mya: Geologically speaking not so astoundingly long ago, there was a colossal volcanic eruption. It occurred at Cerro Galan, in the Andes Central Volcanic Zone in the Catamarca province of Argentina.

1.8 Mya, Pleistocene, Calabrian: Further cooling of the climate. Spread of Homo erectus.

1.76 Mya: Tool making by homo erectus may be traced back to this time.

1,080,000 BP, New Zealand: There occurred a superruption in what is now called the Mangakino Caldera. One might call it the kidnappers eruption.

 

 

 

 

 

 

15 Mya to 10 Mya(?)

 15 Mya to 10 Mya

13.82 Mya: Neogene, Miocene, Serravaillan: Warmer climate during Middle Miocene.

12 Mya: About this time there was a massive, explosive volcanic eruption on the border of what is now Argentina and Bolivia. Cerro Panizos of the Altiplano Puna volcanic complex.

11.830 Mya: About this time a massive, explosive volcanic eruption occurred at what is now the Bruneau/Jarbridge, Yellowstone hotspot in Idaho, USA. It was responsible for the Ashfall Fossil Beds 1,600 km to the east.

11.63 Mya: Neogene, Miocene, Tortonian: Gradual separation of human and chimpanzee ancestors. Sahelanthropus tchadensis in Africa. 

11.7 Mya, Greenlandia Age of the Holocene Epoch: Current interglacial begins. Sea level flooding of  Doggerland and Sundaland. Sahara desert forms. Neolithic agriculture was practiced.(?)