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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
NAME STRUCTUR PROPERTY STATUS SIGN RESULT
FAULT DEFINITE NO
FAULT PROBABLE | NO
FAULT RIGHT LATERAL | DEFINITE YES
FAULI RIGHT LATERAI PROBABLE YES
FAULT LEFT LATERAL DEFINITE YES
FAULT LEFT LATERAL PROBABLE YES
FAULI NORMAL DEFINITE YES
FAULT NORMAL PROBABLE | YES
FAULI AY DEFINITE YES
FAULT AY PROBABLE | YES
FAULT + DEFINITE YES
E FAULT te PROBABLE | YES
FAULT LA THRUST DEFINITE YES
FAULT LA THRUST PROBABLI YES
FAULT HA THRUST DEFINITE YES
FAULT HA THRUST PROBABLE | YES
|:
FOLD DEFINITE NO
FOLD PROBABLE | NO
FOLD ANTICLINAL DEFINITE YES
FOLD ANTICLINAL PROBABLE | YES
FOLD SYNCLINAL DEFINITE YES
FOLD SYNCLINAL PROBABLE | YES
FOLD OT ANTICLINAL DEFINITE YES
FOLD OT ANTICLINAL | PROBABLE | YES
FOLD OT SYNCLINAI DEFINITI YES
FOLD OT SYNCLINAI PROBABLE | YES
Table 2. Attributes of structural features entered during
digitization and their meaning.
2.2.2.3 Strike-Dip Measurements
The strike-dip notations are composed of three parts. First is the
strike line which is the longest one. Second indicates the
direction of dip and it is the shorter line. Third one is an angle
indicating the dip amount. Only strike is digitized with end
points and the sequence of digitization is according to dip
direction so that dip direction should always at the right hand
side (Fig. 4). The angle of dip amount is then entered into the
related field.
1
25
25 TY 25 el
25
1
4
s
Figure 4. Digitization procedure of strikes in several positions.
Numbers at end points correspond to the digitization order.
Strike and dip notations can be represented by a point feature in
GIS. So during the conversion process, the centre point of
strikes would be calculated. The angle of strike would also be
calculated and entered to the related field.
3. GEOLOGIC FEATURE ATTRIBUTE INTERFACE
(GFAI) AND APPLICATION
While digitizing the geological features stated above, GFAI is
developed in order to help the digitizing person and maximize
the standardization. It is independent from any other software
675
except operating system. That is why it can be used in any
digitization software (Fig. 5).
Kivrim
Tabaka
:
NCIX IX] XY
Figure 5. The geologic feature attribute interface (GFAI).
User does not see the GFAI during the digitization unless the
mouse is pointed to the top of the screen (Fig. 6). The digitizing
person presses the related button on the GFAI according to the
geological feature that is digitized. When the button is pressed,
the information about that feature is copied into the ram. Then
the user pastes it into the related field at the digitizing software.
EAE màu d Xi
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Universal Transverse
International 1909
CALIBRATION POINTS
Garp Add |
3 Remove |
ET |
T
Ur
Tf (mar)
750 |v = = ] Few Many
ERA sli Threshold | | of
= spacing ^|] |
Mode: Object Capture:Select:Line - Thin on End Edit cursor: 1339 910
Mapped: 414202 3812557
Prompt: | Capture and edit objects of select type
Length: 0.000
nee
- URCES
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185 Remove |
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Swe N POINTS
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Sri b i : Remove |
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Few Many
Threshold «| |] j|
Spacing} | 1
Mode: Object Cap! ine - Thin on End Edit Cursor: 1339 910
Prompt: | Capture and edit objects of select type Mapped: 414202 3812557
Length: 0.000
Figure 6. The screen captures during the digitization and after
the GFAI appears.
For example if the captured geologic feature is a formation
boundary and it is a right lateral strike slip fault at the same
time, the user finds the same feature on the GFAI and presses
on that button. À string such as “FORMATION BOUNDARY,
