Kenya explanation of fields and codes in the database

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(term in brackets is field name in database)

AREA CODE (AREACODE) Refers to the 1:50,000 topographic sheet number (see Introduction) without the (/) quarter-sheet divider. Where this runs to four figures, only the last three are used and leading zeros are omitted (e.g. 106/2 appears as 62 in the database).
DRAINAGE CONDITIONS (DRAINCON) The drainage state at the time of collection: F Flowing; S seepage below stream bed; and D dry.
MORPHOLOGICAL DIVISION (MORPDIVS) This parameter describes the land-forms around the sampling site
  B Dissected Basement
  D Dissected Volcanics
  I Inselbergs
  M Mountain Range
  P Piedmont
  V Volcanic Plateaux
SUPERFICIALS (SUPERF) This parameter records important superficial deposits at the sampling site
  A Alluvium
  B Black Cotton Soil
  C Colluvium
  K Calcrete
  L Laterite
  S Aeolian sand
LITHOLOGY (LITH) This parameter records the lithology at the sample site
A Amphiobolite N Basalt
B Biotite gneiss O  
C Colluvium P Acid intrusive
D Basic intrusive Q Quartzite
E Mylonite or Cataclastite R Mugearite
F Phonolite S Aluminous gneiss
G Graphite gneiss T Trachyte
H Mafic gneiss U Ultramafic
I Intermediate intrusive V Leuco-gneiss
J Mica schist W Muscovite gneiss
K Calcrete X Undifferentiated basement
L Laterite Y Undifferentiated sed. rocks
M Marble Z Migmatite


These parameters record the two most abundant lithostratigraphic groups in the catchment of the stream being sampled. It should be noted that the coding scheme used in the database seems to depart from that listed in Ridgway (1982), and consequently the data in these fields should be treated with caution.

A Don Dol gneisses with acid intrusives
B Il Busi gneisses
C Loldaika Complex
D Don Dol gneisses
E Lolkoitai gneisses with basic intrusives
F Sirimum phonolites
G Mukogodo Complex
I Don Dol gneisses with basic intrusives
K Kotim gneisses
L Lolkoitai gneisses
M Matoni gneisses
N Basalts (un-named)
O Ol Dionyo Ng’iro gneisses
Q Mount Kenya volcanics
R Rumuruti Group
S Undifferentiated sediments
U Undifferentiated migmatites
Y Nyambeni volcanics


A letter code has been used to record the month in which each sample was collected, to provide data for any seasonal variation study which might be carried out at a future date. Unfortunately there is no record in the U.K. of when the survey started, but it is almost certain that month A is either July or August 1981

A Month 1
B Month 2
C Month 3
D Month 4
E Month 5
F Month 6
G Month 7
H Month 8
I Month 9
J Month 10
K Month 11
L Month 12
M Month 13