age (Ma) 0.9
strat. ht. (m)
growth strata (3810 m)
3800 3600
2.1
NEW STRATIGRAPHIC AND STRUCTURAL DATA FROM THE TIAN SHAN FORELAND, W. CHINA
3400
top pmag (3764m)
Xiyu Conglomerate (3420-3800m)
transition zone
Jeff Cook posing in front of Xiyu conglomerate outcrop.
3200 3000
overbank fluvial and floodplain (17453400m)
new magnetostratigraphic age data
2800 2600 2400 2200
Camp within late-MiocenePliocene fluvial strata
2000
6.8
STRATIGRAPHY: Stratigraphic column of Miocene-Pliestocene strata, showing representative photographs, major lithofacies boundaries, and magnetostratigraphic ages (in boxes at right) of major contacts.
1800 1600
eolian sandstone ( 965-1745)
1400
Jozi del Angel documenting late-Miocene eolian strata.
1200 1000 800 600
transition zone
eolian sandstone (513-740m)
12.4 400
12.8-13.2
green lacustrine beds (265-330m) 200 0
Elevation (km above sea level)
14.5
meandering fluvial and overbank
mudflat basal conglomerate
10 8 North 6 4 2 Basin 0 Fill -2 -4 -6 -8 -10 Neogene Paleozoic
STRUCTURE: Balanced cross-section (below) through the study area based on structural mapping. Total shortening is interpreted to be 42 km (35%) since the onset of deformation during the early Miocene. No Vertical Exageration
Cambrian Ordovician-Cambrian
Fault Surface Ground Surface
