This article is of use for anthropology and also for ancient history
· Attirapakkam is near chennai in kortallayar river basin
· This site was 1st identified by robert bruce foote in 1863
· Quartzite tools of acheulian period were found here
WHATS NEW?
· So far it was believed that human existence in India began .5 to .6 mn yrs ago
· The new discoveries of acheulian tools dates back to 1-1.5 mn yrs ago
DATING TECHNIQUES
· Palaeomagnetism
· Aluminium beryllium isotope techniques
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