Citation:

0011-7471(70)90065-3

Name: Mineralogy of northern Indian Ocean surface sediments and of suspended sediments of Indian rivers (Table 2 and 5)
Published: 1970
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The solid phases from surface sediments, atmospheric dusts, and rivers of the Indian Ocean environment have been analyzed for their clay minerals and quartz. Such data have been used to delimit the transport paths and sources of the detrital minerals in the oceanic deposits. Diagnostic in distinguishing fluvial and eolian inputs to the northern Indian Ocean is a combination of the clay mineral assemblages and of their geographic distributions.

River borne solids are the primary components of the Bay of Bengal deposits. The eastern part receives its continental input through the Ganges-Brahmaputra river system, while drainage of the Indian Peninsula by rivers introduces solids to the western part. The former materials are characterized by high illite and chlorite in the clay mineral assemblages; the latter by montmorillonite. The winds over the Bay bear distinctive dust burdens based upon their directions. However, their contributions to the sediments are insignificant.

The eastern sector of the Arabian Sea receives major contributions of continental debris from the rivers and the high montmorillonite levels clearly indicate a source in the Indian Peninsula. The rest of the Sea appears to receive most of its land-derived materials from the north, perhaps the desert regions of northern India and West Pakistan, and they are wind-borne. These materials are also transported to the equatorial regions of the Indian Ocean.

A gradient in attapulgite, just north of the equator, may indicate an eolian contribution to the Arabian Sea from the African continent.

The halogenated hydrocarbon pesticides were assayed in the southwest monsoon winds and enter the Bay of Bengal at levels of a half ton per month, an amount comparable to those introduced by other wind and river systems to the marine environment.

Coverage:

Median Latitude: 15.624285 * Median Longitude: 75.176807 * South-bound Latitude: 1.275000 * West-bound Longitude: 47.117000 * North-bound Latitude: 24.500000 * East-bound Longitude: 94.367000

Date/Time Start: 1962-09-21T00:00:00 * Date/Time End: 1962-09-29T00:00:00

Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m

Event(s):

Ahmedabad (116) * Latitude: 23.080000 * Longitude: 72.630000 * Elevation: 50.0 m * Location: Sabarmat, India, Asia * Campaign: * Method/Device: (RGS) * Comment: Area: 12950 km**2; Mapcode of UNESCO report: F6

CIRCE-21 * Latitude: 11.383000 * Longitude: 87.783000 * Elevation: -3308.0 m * Location: Bay of Bengal * Campaign: * Basis: Melville * Method/Device: Gravity corer (GC)

CIRCE-22 * Latitude: 11.418300 * Longitude: 83.816700 * Elevation: -3456.0 m * Location: Bay of Bengal * Campaign: * Basis: Melville * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event
2	Sample code/label	Sample label		Goldberg, Edward D
3	Latitude of event	Latitude
4	Longitude of event	Longitude
5	Elevation of event	Elevation	m
6	DEPTH, sediment/rock	Depth sed	m		Geocode
7	Montmorillonite	Mnt	%	Goldberg, Edward D	in <2 µm fraction
8	Illite	Ill	%	Goldberg, Edward D	in <2 µm fraction
9	Kaolinite+Chlorite	Kln+Chl	%	Goldberg, Edward D	in <2 µm fraction
10	Kaolinite	Kln	%	Goldberg, Edward D	in <2 µm fraction
11	Chlorite	Chl	%	Goldberg, Edward D	in <2 µm fraction
12	Quartz	Qz	%	Goldberg, Edward D	in carbonate free sediment
13	Quartz	Qz	%	Goldberg, Edward D	in total sample

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

345 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Sample label	3 Latitude	4 Longitude	5 Elevation [m]	7 Mnt [%] (in <2 µm fraction)	8 Ill [%] (in <2 µm fraction)	9 Kln+Chl [%] (in <2 µm fraction)	10 Kln [%] (in <2 µm fraction)	11 Chl [%] (in <2 µm fraction)	12 Qz [%] (in carbonate free sediment)	13 Qz [%] (in total sample)
Ahmedabad	Sabaramathi river at Ahmedabad	23.0800	72.6300	50	18	44	37	26	11		9
CIRCE-21	21G	11.3830	87.7830	-3308	37	35		14	14	8
CIRCE-22	22G	11.4183	83.8167	-3456	58	20		12	10	5
CIRCE-23	23G	11.6433	81.1267	-3496	70	10		10	10	7
CIRCE-24	24G	14.2670	80.8670	-2845	83	8		5	4	7
CIRCE-25	25G	15.3000	83.2833	-3146	77	11		6	6	8
CIRCE-26	26G	15.3000	87.3170	-2831	32	38		14	16	9
CIRCE-27	27G	15.2170	91.2330		36	30		16	18	10
CIRCE-28PB	28G	15.3500	94.3670	-37	31	32		16	21	33
CIRCE-30P	30G	16.8670	92.5670	-2403	33	29		18	20	10
CIRCE-31G	31G	19.7000	92.7670	-59	2	46		20	32	18
CIRCE-32	32G	19.0000	91.5330		20	46		15	19	12
CIRCE-33	33G	19.0800	87.6800	-2142	36	36		13	15	13
CIRCE-34	34G	20.8667	87.7417	-46	30	38		15	17	55
CIRCE-36	36G	20.3330	89.3170	-435	34	38		12	16	15
CIRCE-37	37G	17.5500	86.5833	-2544	48	28		11	13	11
CIRCE-38	38G	13.4830	86.9000	-3076	44	31		11	13	8
CIRCE-39	39G	9.7917	83.5000	-3643	60	18		11	11	5
CIRCE-40	40G	7.9917	82.1917	-3799	60	17		13	11	10
CIRCE-41	41G	8.0000	85.6417	-3744	44	27		14	14	6
CIRCE-42	42G	6.9170	89.0330	-3741	34	33		15	17	6
CIRCE-44	44G	4.1830	88.5830	-4057	40	30		15	15	7
CIRCE-45	45G	1.7000	86.8083	-4383	18	46		18	19	6
CIRCE-46	46G	1.9183	84.3033	-4722	18	52		13	16	10
CIRCE-47	47G	1.2750	82.9050	-4442	16	52		13	19	7
CIRCE-48	48G	4.3467	80.7667	-4324	70	12		6	10	5
Grand_Anicut_South	Cauveri river at Trichi	10.8300	78.8300	58	51	28	21
Mancherial	Godavary river	18.8300	79.4500	124	81	7	12
Paksay	Ganges river at Allahabad	24.0800	89.0300	14	10	58	32	4	28		20
Paksay	Ganges river at Nabadeep	24.0800	89.0300	14	20	43	38	22	16		21
Polavaram	Godavary river at Rajahmundry	16.9200	81.7800		85	6	10	7	3		9
USN-02	U2	21.5000	69.5000		75	16		5	5
USN-03	U3	22.5000	68.5000		26	48		2	24
USN-07	U7	21.5000	60.5000		16	46		5	33
USN-08	U8	22.5000	60.5000		14	46		3	37
USN-16	U16	23.4500	63.5833		8	56		2	34
USN-17	U17	22.5000	63.5000		16	51		2	31
USN-18	U18	21.5500	63.3200		10	53		5	32
USN-20	U20	23.4667	65.5167		14	52		7	26
USN-22	U22	24.5000	65.5000		8	54		9	29
USN-24	U24	22.5167	66.4000		34	40		7	19
USN-26	U26	21.5500	67.5167		42	36		4	28
USN-28	U28	20.5000	61.5000		16	53		7	25
USN-29	U29	20.5000	70.5000		74	15		5	5
USN-31	U31	20.2500	72.4833		62	20		9	9
USN-32	U32	19.5167	71.5667		77	14		5	5
USN-35	U35	24.4833	62.4333		2	58		11	29
USN-37	U37	24.5000	57.5000		8	49		<1	43
USN-38	U38	24.5000	59.5000		3	54		<1	42
USN-40	U40	20.5000	65.5000		18	54		10	18
Vijayawada	Krishna river at Vijaywada	16.5200	80.6200		87	5	8
ZEPHII-001G	ZII-1	12.4500	47.1170	-1814	33	35		26	6	7
ZEPHII-005G	ZII-5	12.4170	50.5500	-2417	34	37		19	10	7
ZEPHII-006G	ZII-6	9.2500	54.1500	-3701	32	44		14	11	6
ZEPHII-008G	ZII-8	9.2830	58.9670	-3196	27	41		15	17	5
ZEPHII-010G	ZII-10	9.5500	61.4000	-4579	21	50		14	14	10
ZEPHII-011GA	ZII-11	9.5830	63.1000	-4498	17	54		11	18	11
ZEPHII-012G	ZII-12	9.8000	69.2500	-4544	30	44		5	21	9
ZEPHII-013G	ZII-13	9.8330	71.8330	-2372	26	40		17	17	9
ZEPHII-014G	ZII-14	9.9330	73.1330	-1922	34	31		17	17	9
ZEPHII-015G	ZII-15	9.9330	74.8330	-2286	48	20		24	8	7