A sea level curve composed for the western Indian continental margin reveals that the sea level was lower than the present by more than 100 meters about _______ years ago.
10000 – 11000
Sea level curves for the western continental margin of India were built by researchers of the National Institute of Oceanography from radiocarbon-dated shallow-water sediments, relict carbonates and foraminifera on the shelf.
This regional curve places the sea level more than 100 m below the present stand at about 10,000–11,000 years before present, at the start of the Holocene.
The sea then rose rapidly, flooding the outer shelf, and reached close to its present level around 6,000–6,500 years ago, so that span marks the near-present stand, not a –100 m stand.
The spans 15,000–20,000 and 20,000–21,000 years belong to the Last Glacial Maximum and early deglaciation; the regional curve, built from radiocarbon dates on outer-shelf relict deposits (radiocarbon ages run younger than calendar ages), places its more-than-100 m lowstand at about 10,000–11,000 years, so the older glacial spans are not the stand this curve reveals.
Hence, 10000 – 11000.
Similar Questions
Which of the following terms is not applicable to the weathering process ?
Match the following:
List I List II (a) Segment (1) A portion of slope on which the angle remains approximately same (b) Element (2) An element with downslope increase in angle (c) Convex element (3) A portion of slope profile on which the curvature approximately remain constant (d) Concave element (4) An element with downslope decrease in angle Codes : (a) (b) (c) (d)
Arrange the landforms on the basis of their occurences from lowest to the highest levels : (1) Sea-cliff (2) Ridges and runnels (3) Guyot (4) Abyssal plain
The basic goal of Davisian model of cycle of erosion was _____
Which of the following is correct relation about the speed of the earthquake waves ?
Which of the following statements is correct about slopes ? (I) Weathering controlled slopes occur where actual rate of regolith production is less than the potential rate at which it can be removed. (II) Transport limited slopes are those on which the rate of regolith production is greater than the capacity of transport processes to remove it.
The most common and typical volcanic cone is _____ .
Assertion (A): Large avalanches usually occur on slopes of 30º–50º.
Reason (R): The optimum condition for geomorphologically significant avalanche, snow accumulation are on slope of 30º–50º.
Codes:
_____ is an anticlinal fold formed due to intrusion of rocks.
Which of the following statements is incorrect about thermosphere ?
Important Questions from Mixed Topic (MH-SET)
.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
List I List II (a) New York Public Library (i) Shelv AR (b) Miami University Augmented Research Group (ii) Smart library (c) Oula University Library (iii) Wolf Walk (d) North Carolina State University (iv) Find the future Codes:
Which part of the QR code represents the encoded data?
