uniformitarianism RAJKUMAR POREL, M.SC, 2019

1. DEPARTMENT OF GEOERAPHY
P.G SECTION
SESSION =2019-2020

2. -:NAME OF THE TOPIC:-
UNIFORMITARIANISM
PRESENTATION BY:-
RAJKUMAR POREL (ROLL NO=91) AND SAHELI DAS (ROLL NO=116)

4.  Uniformitarianism, in geology, the doctrine
suggesting that Earth’s geologic processes
acted in the same manner and with
essentially the same intensity in the past as
they do in the present and that such
uniformity is sufficient to account for all
geologic change. This principle is
fundamental to geologic thinking and
underlies the whole development of
the science of geology.

6.  Uniformitarianism concept developed in the late
1700s.
 This concept suggests that catastrophic processes
were not responsible for the landforms that existed
on the Earth's surface.
 This idea was diametrically opposed to the ideas of
that time period which were based on a biblical
interpretation of the history of the Earth.
 The theory of uniformitarianism suggested a gradual
geologic process. i.e erosion, deposition, mountain
building.
CONCEPT OF UNIFORMITARIANISM:-

7. James Hutton, in 1785.
This concept was further modified and developed by
Jhon Playfair, in 1802.
Then Sir Charles Lyell popularized this concept of
uniformitarianism by giving suitable place of it in his
famous book ‘ Principles of Geology’.

10.  The geologic processes that happen on the
earth today happened the same way in the
past ( volcanoes, mountain building etc. )
 The earth slowly and constantly changing.

12.  Uniformitarianism competed for acceptance with
catastrophism and eventually displaced it.
 Hutton was the first person to recognize that we could
understand much about how geologic features (such as
valleys, sedimentary rocks, and mountains) came to be by
observing the events of the present day.
 Uniformitarianism gave us a tool to interpret the geologic
past. In fact, geologists sometimes summarize the concept
in the phrase: The present is the key to the past.
 The concept is applied to all types of geologic processes.
For example, rivers erode valleys and build deltas
gradually.

14. This investigation into uniformitarianism attempted
to reveal that although it played a useful role in the
Historical context in which it originated, today the
Concept of it is an anachronism.
Modern geologists interpret the idea in a slightly
Different way than it was originally conceived, but it
Is still an indispensable concept in interpreting the
Geologic history of our planet.

15. BOOKS:-
 Kale and Gupta .Introduction to Geomorphology
 Sing Savindra . Geomorphology
 Sing Savindra . Geomorphology and Environment
 William D Thornberry. Principles of Geomorphology
WEBSITES:-
 https://en.m.wikipedia.org.wiki
 https://evolution.berkeley.edu.article
 www.physicalgeography.net.in
 https://www.slideshare.net
 https://www.nps.gov.articles.geo
 https://www.classzone.com.content