THE UNDERGROUND FORM OF FLOOR OF GANGETIC TROUGH. 77 



Table 23. — Gravity Stations in the Gangetic alluvium. 





Approxi- 













mate 



distance 



from 



Bouguer 



Hayford 

 compen- 



Resulting 



Thickness 



of the 

 alluvium 

 deduced 



from 

 Hayford 

 anomaly. 



Station. 



north 



and south 



anomaly 

 for height 



sation 

 of the 



thickness 

 of tho 





boundary 

 of 



and mass. 



Imaginary 

 Range. 



alluvium. 





alluvium. 











Roorkee .... 



10 : 



— -107 



— -020 



. - 



13,000 



9,500 



Nojli 







30 





— 095 



— -014 



12,000 





Kaliana 







40 





— -058 



— -008 



7,500 



4,000 



Meerut 







70 



30 



— 027 



. . 



4,000 



2,500 



Khurja 







! 100 



30 



— -042 



. . 



6,500 



5,500 



Gcsupur . 







100 



10 



— -020 



. . 



3,000 



2,000 



Aligarh 







i 120 



40 



— -026 



, . 



4,000 



4,000 



Hathras . 







: 130 



30 



— -006 



, . 



1,000 



1,500 



Muttra 







150 



10 



dOO 



. , 







1,000 



Agra 







170 







— -004 





500 



500 



Gorakhpur 







50 : 120 



— 101 





15,000 



13,500 



Majhauli Raj 







60 : 100 



— -079 



, . 



12,000 



12,000 



Muzaffarpur 







60 : 70 



— 061 



. . 



9,000 



9,000 



Sultanpur 







100 : 70 



— -040 



. . 



6,000 





Arrah 







100 : 50 



— -083 





5,500 



7,000 



Buxar 







110: 40 



— 023 



, , 



3,500 



5,000 



Moghalsarai 







150 : 20 



— 013 



. . 



2,000 



2.500 



Allahabad 







160 : 20 



+ -002 



, , 









Sasaram . 







150 : 



— -002 









2,000 



Siliguri 







10 : 



— 137 



— 045 



14,000 



9,000 



Jalpaiguri 







30 





— -096 



— -020 



1 1 ,500 



6,000 



Kcsarbari 







50 





— 043 



— -008 



5,000 





Ramchandpur 







80 





-f -001 



•• 









first column of the table gives the name of the station, the second 

 the approximate distance from the northern and southern bound- 

 aries of that portion of the Gangetic trough which is covered by 

 the Gangetic alluvium. These distances, consequently, differ from 

 those used elsewhere, which are measured from the main boundary 

 on the north, the difference being due to the fact that the position 

 of the main boundary is uncertain for a large portion of its course, 

 where it runs through the territory of Nepal, and partly to the 

 fact, which will appear further on, that the northern boundary 

 of the alluvium marks a distinct break in the floor of the trough, 

 in that portion of the range where the Siwalik region, the foot* 

 hills of the Sub-Himalaya, is distinctly developed. On the south 

 the distances are measured from the boundary of the trough 



[ 225 1 



G 



