Geologic time scale

Earth's history is divided into Eras which are subdivided into periods and epochs. These divisions are marked by the presence of index fossils indicating large biotic events. Many in the scientific community, suggest we have entered a new division in the geologic time scale, the Anthropocene, marked by biological and geological changes caused by humans, hence the name, Anthropo, Greek for "man", and cene, Greek for "new". However an interdisciplinary debate around absolute dates and classification of this new time division raised from the separation among the scientific community to agree on whether the Anthropocene should be considered a new time division at all, if so, when does it begin and what rank does it belong to (Crustzen, 2000). Arguments against introducing a new time division concentrate on the use of the geologic time scale as a resource to understand the past, not the present; an argument that limits future reach of geology (Crutzen, 2003). The counter argument defines the Anthropocene as an epoch, but its beginning is more controversial. Fossilized bones and artifacts record human activity as far as 1.8 million years ago (citation), which can be used as the marking of a new species. However these records are not…

Geologic time scales often last thousands of years, and it is easy to tell when they begin and end. The current geologic time scale has present day humans living in the Holocene period which began almost 12,000 years ago. Recent debate has begun, however, that proposes a new period. Since humans have had such a large effect on the Earth, especially in the last few hundred years, various scientists want to see this period of human effects as its own section on the geologic time scale. This…

in order to describe our current geologic epoch. It is said to have started from the time people first started having a control over ecosystems; influencing environmental ecologies all over the world (Robbins, Hintz, & Moore, 2014 p.4). With this definition, it is implied that humans have had a large enough impact on the earth in order to significantly change it to the point it cannot go back to the way it was. Therefore, the question then becomes, have we as humans really changed the world so…

Geologic time periods are often signified by a definite end or beginning event. For most, they end after a catastrophic event such as a volcanic eruption or asteroid collision. For the newest proposed time period, the anthropocene, things may be a little more blurry. There are many factors that may signal the beginning of a new epoch, but no one piece of evidence can say for sure if a new period should be defined or when this period would start. The author, Jan Zalasiewicz’s research has focused…

There is a steadily growing consensus that recent human activity has had such an impact that it has shifted the Earth into a new geologic epoch of our own making. The advent of this epoch, known as the Anthropocene, has generated much discussion and tension between the various science disciplines. The major issue being discussed is whether there is a need for a new era covering the last three centuries of human impact on the planet. Defining this epoch, in terms of both time and space, has also…

For my writing assignment I chose “My Beloved Brontosaurus”. This was such an interesting read to me because I feel as if he put so much effort and thought into it. For example he starts off the book by saying, “From the time I was a toddler, I desperately wanted to meet the gigantic herbivore.” He has had this interest clearly since he was a child and he goes into such depth about it. Many people feel otherwise as well. “My Beloved Brontosaurus” has many reviews including some from NY Times.…

They consider is it started as earlier as human discover fire (around 12,000 years BP), which was the growth of agriculture. Studies suggest that there is credible evidence of human influence during this time such environmental crisis. The other studies claim that it began during the Industrial Revolutions -late eighteenth century. Early Anthropocene Looking a deeper into these different eras of Anthropocene, beginning with the Early Anthropocene idea. Is highly suggested to be the first time…

measurements of our world strive to quantify the quality of our lives. The scales we use to measure ourselves and how we feel, fail to understand the concept of life itself. The tears of joy felt by a mother; the symphony of silence held by a survivor; the loudness of a murmur spoken as a prayer. Life is a composition, led by a melody, woven piece by piece, tied by our hopes and colored by our sorrows. Like darkness is the absence of light, pain is measured by the absence of happiness.…

While Bigger Thomas in Native Son actually kills two women, Jefferson, an innocent black man, has to die just because he was "at the wrong place at the wrong time" (158). They do not even have enough evidences to prove Jefferson's guilt. The only evidence is the fact that Jefferson was found on the spot with some money in his pocket and a bottle of whiskey in his hand. (Why couldn't he claim that the money in his pocket was his own, and that his drinking is nothing to do with the murder? It…

1___Scale is a geographic tool for creating and interpreting maps. Scale also has a broader meaning for geographers, as the relationship between any phenomenon and Earth as a whole. 2___A region is an area characterized by a unique combination of features. 3___A formal region is an area within which everyone has one or more distinctive characteristics in common, whereas A functional region is an area organized around a node or focal point. 4___An example of a functional region is the…