Motivation Text

(1)

Multispectral cartographic base in geological research, Central Asia

Hugo de Boorder, Safety Bay, Western Australia; Institute of Earth Sciences, Utrecht; CERCAMS, London Maarten Zeylmans van Emmichoven, Faculty of Geosciences, Utrecht

Text

Motivation Text

Motivation

For large parts of Asia up-to-date regional-scale geological and geophysical maps are not normally immediately at hand.

Publications on the geology and earth resources of Asia have to resort, as everywhere else, to schematic diagrams to get their message across.

Consequently, new data and ideas remain isolated and are not optimally used in regional problems.

Motivation

Text

89°0'0"E

90°0'0"E

91°0'0"E

92°0'0"E

93°0'0"E

93°0'0"E 46°0'0"N

46°0'0"N 47°0'0"N

90°30'0"E 90°30'0"E

91°0'0"E 91°0'0"E

Text

55°0'0"E 50°0'0"E

45°0'0"E

60°0'0"E

65°0'0"E

70°0'0"E

75°0'0"E

80°0'0"E

85°0'0"E

85°0'0"E 90°0'0"E

90°0'0"E

95°0'0"E

95°0'0"E 100°0'0"E

100°0'0"E 105°0'0"E

105°0'0"E 110°0'0"E

110°0'0"E 115°0'0"E

115°0'0"E

120°0'0"E 125°0'0"E

35°0'0"N 35°0'0"N

40°0'0"N 40°0'0"N

45°0'0"N 45°0'0"N

Lake Baikal

Lake Balkash

Beijing Aral Sea

Tarim Basin

Junggar Basin R. Irtysh

50%

25%

50%

0 1.25 2.5 5 7.5 10

Kilometers

0 5 10 20 30 40

Kilometers

0 125 250 500 750 1,000

Kilometers

Preliminary interpretation in terms of contacts (yellow), traces of faults (red) and of foliation (white)

Fuyun Fault

In large areas fine detail in Mr.Sid imagery allows interpretation at 1:100,000 scale

Varying transparency (%) north of Beijing illustrates extent and longitudinal overlap of Mr.Sid frames

Single ETM frame

L B

M

a

Text

P

Text

Text Text Text

- A finely laminated belt with lenses (e.g. -L-) and irregularly outlined bodies (e.g. -B-) of strongly varying proportions suggests ductile-brittle deformation - Within -B-, a circular body -P- suggests a pipe-like intrusion protected from deformation by -B-

- The appendix -a- on elliptical gray mass -M- suggests a horned intrusion possibly implying syn-deformational magma emplacement

Bottom panel

Advantages

Reference function in geoinformtion systems

Hydrographic, morpho-tectonic and spectral-lithologic information Realistically scaled downward from 1:100,000

Continuous database

Objective

With a view to a continuous, easily managed cartographic base of continental proportions, we use Enhanced Thematic Mapper (ETM) imagery in "MrSid" format

Motivation Text

Multispectral cartographic base in geological research, Central Asia

Hugo de Boorder, Safety Bay, Western Australia; Institute of Earth Sciences, Utrecht; CERCAMS, London Maarten Zeylmans van Emmichoven, Faculty of Geosciences, Utrecht

Text

Motivation Text

Motivation

For large parts of Asia up-to-date regional-scale geological and geophysical maps are not normally immediately at hand.

Publications on the geology and earth resources of Asia have to resort, as everywhere else, to schematic diagrams to get their message across.

Consequently, new data and ideas remain isolated and are not optimally used in regional problems.

Motivation

Text

Text

Lake Baikal

Lake Balkash

Beijing Aral Sea

Tarim Basin

50%

25%

50%

0 1.25 2.5 5 7.5 10

Kilometers

0 5 10 20 30 40

Kilometers

0 125 250 500 750 1,000

Kilometers

Preliminary interpretation in terms of contacts (yellow), traces of faults (red) and of foliation (white)

Fuyun Fault

In large areas fine detail in Mr.Sid imagery allows interpretation at 1:100,000 scale

Varying transparency (%) north of Beijing illustrates extent and longitudinal overlap of Mr.Sid frames

Single ETM frame

L B

M

a

Text

P

Text

Text Text Text

- A finely laminated belt with lenses (e.g. -L-) and irregularly outlined bodies (e.g. -B-) of strongly varying proportions suggests ductile-brittle deformation - Within -B-, a circular body -P- suggests a pipe-like intrusion protected from deformation by -B-

- The appendix -a- on elliptical gray mass -M- suggests a horned intrusion possibly implying syn-deformational magma emplacement

Bottom panel

Advantages

Reference function in geoinformtion systems

Hydrographic, morpho-tectonic and spectral-lithologic information Realistically scaled downward from 1:100,000

Continuous database

Objective

With a view to a continuous, easily managed cartographic base of continental proportions, we use Enhanced Thematic Mapper (ETM) imagery in "MrSid" format

44 ETM Mr.Sid-format frames, three spectral channels (7,4,2) Each Mr.Sid frame consists of about nine ETM frames

Coordinate system WGS 1984 UTM Zone 45N

Characteristics

Projection Transverse Mercator