Identification

Title

Kenya regional geochemistry

Abstract

The Samburu - Marsabit Geological Mapping and Mineral Exploration Project was a joint Kenyan and British technical co-operation project, carried out by staff of the Mines and Geological Department, Ministry of Environment and Natural Resources, Kenya and staff from the British Geological Survey. The first phase of the project commenced in 1980, and covered the area between 36degrees and 38degrees E and from the equator to 2degrees N. The second phase, carried out between 1984 and 1986 covered the area between 36degrees and 38degrees E and from 2degrees N to the Ethiopian border. Sampling was carried out concurrently with geological mapping and was largely constrained by the requirements of that exercise. Little or no sampling was done in areas previously mapped by other bodies. Sampling was mainly confined to areas underlain by basement rocks of the Mozambique Belt and was very sparse over most of the Tertiary and Quaternary volcanic cover. Chemical analyses for the stream sediments were: Ag, Ba, Co, Cu, Fe, Li, Mn, Mo, Ni, Pb, Sr, and Zn. Raw data is available from the Mines and Geological Survey Department, Ministry of Environment and Natural Resources, Nairobi, Kenya. Sampling densities varied considerably across the Phase 1 project area, but generally a stream sediment sample density of one per 4 to 8 km2 and a panned concentrate density of one per 13 to 16 km2 was achieved. In the Phase 2 area, which was mainly very arid, a few samples were collected from dry stream beds, as part of a helicopter survey of the area, to provide some idea of the geochemistry of the major lithological units. Stream sediments were collected by combining grab samples from 5 to 10 points within a 10m radius of the selected site. If necessary the samples were dried before being sieved and the fine (-80 mesh B.S.) fraction retained for analysis. Heavy mineral concentrates were obtained by taking 2 to 5kg of material from the sample site and panning at the base camp, where water was available, or at the Mines and Geological Department headquarters at Nairobi.

Resource type

dataset

Resource locator

http://www.bgs.ac.uk/gbase/geochemcd/home.html

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13480219

codeSpace

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::32637

Additional information source

The first phase of the project commenced in 1980. The second phase, was completed in 1986. BOUNDING_SRS_CODE = U37C WEST_BOUNDARY = 213037 EAST_BOUNDARY = 388600 NORTH_BOUNDARY = 221155 SOUTH_BOUNDARY = 277 BGS (1999). Kenya Regional Geochemical Survey CD-ROM: Samburu-Marsabit. Version 1.0. BGS International Regional Geochemistry CD-ROM Series, No. 5 Kenya. British Geological Survey, Keyworth, Nottingham, UK Hackman B. D., Charsley T. J., Kagasi J., Key R. M., Siambi W. S. and Wilkinson A.F. 1989. The geology of the Isiolo area. (Degree sheet 36). Rep Mines & Geol. Dept. Kenya, No. 103 Hackman B. D. 1988. The geology of the Baringo - Laikipia area (Degree sheet 35). Rep Mines & Geol. Dept. Kenya, No. 104 Key R. M. 1987a. The geology of the Maralal area (Degree sheet 27). Rep Mines & Geol. Dept. Kenya, No. 105 Charsley T. J. 1987a. The geology of the Laisamis area (Degree sheet 28). Rep Mines & Geol. Dept. Kenya, No. 106 Ochieng J. O., Wilkinson A. F., Kagasi J., and Kimomo S. 1988. The geology of the Loiyangalani area (Degree sheet 19). Rep Mines & Geol. Dept. Kenya, No. 107 Key R.M. 1987b. The geology of the Marsabit area (Degree sheet 20). Rep Mines & Geol. Dept. Kenya, No. 108 (Reconnaissance) Wilkinson A. F. 1988. The geology of the Allia Bay area (Degree sheet 11). Rep Mines & Geol. Dept. Kenya, No.109 (Reconnaissance) Charsley T. J. 1987b. The geology of the North Horr area (Degree sheet 12). Rep Mines & Geol. Dept. Kenya, No. 110 (Reconnaissance) Key R. M. and Watkins R. T. 1988. The geology of the Sabarei area (Degree sheets 3 and 4). Rep Mines & Geol. Dept. Kenya, No. 111 (Reconnaissance) Publication: Samburu - Marsabit geological mapping and mineral exploration project: geochemical exploration aspects. Report on an advisory visit to Kenya, April - May 1981. Institute of Geological Sciences, overseas division report no. 81/5 (unpub.) Publication: Samburu - Marsabit geological mapping and mineral exploration project: geochemical exploration aspects. Report on a second advisory visit to Kenya, October - December 1981. Institute of geological sciences, overseas division report no. 81/16 Publication: Samburu - Marsabit geological mapping and mineral exploration project: geochemical exploration aspects. Report on a third advisory visit to Kenya, May - June 1982. Institute of geological sciences, overseas division report no. 82/10 Publication: Samburu - Marsabit geological mapping and mineral exploration project: geochemical exploration aspects. Report on a fourth advisory visit to Kenya, September - October 1984. British geological survey, overseas directorate report no. 84/10 Publication: Samburu - Marsabit geological mapping and mineral exploration project: geochemical exploration aspects. Report on a fifth advisory visit to Kenya, November - December 1985; summary of the phase 1 results. British geological survey, technical report no. Mp/86/5/r The British Geological Survey carried out an extensive survey of the hydrothermal resources of the Kenya Rift Valley between 1985 and 1992. This information is held by the Hydrogeology Group of the British Geological Survey.

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Geology

Geochemistry

Sampling

Exploration

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

34.0000

East bounding longitude

42.0000

North bounding latitude

5.0000

South bounding latitude

-5.0000

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

KE

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

KEN

Extent group

authority code

title

reference date

date type

creation

effective date

1979

code identifying the extent

KENYA [id=687000]

Temporal reference

Temporal extent

Begin position

1980

End position

1986

Dataset reference date

date type

creation

effective date

1980

Frequency of update

notPlanned

Quality and validity

Lineage

CD-Rom database made up from digital data files produced during the two phases of the project.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

Data in various formats, MS Excel, MS Word and image files available on a CD-ROM

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Responsible organisations

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

originator

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Responsible party

organisation name

British Geological Survey

full postal address

Environmental Science Centre, Nicker Hill, Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

0115 936 3143

facsimile number

0115 936 3276

email address

enquiries@bgs.ac.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2021-01-19

Metadata language