Table 2. Radiocarbon Dates for
Dempsey Divide Late Holocene Pluvials
|
Sample
Laboratory Number |
Sample Provenience |
Conventional
Age (Years
B.P.) |
13C/12C
Ratio (o/oo) |
1
d Calibrated
Range |
2
d Calibrated
Range |
Calibration
Curve Intercepts |
Duration
and Termination, Delaware Canyon Pluvial, Estimated Terminal Date AD 1650
|
Beta-86674 |
Ab
top, FCE
#1 |
190
+/- 70 |
-19.6 |
AD
1655-1700 AD
1720-1820 AD
1855-1860 AD
1920-1950 |
AD
1525-1560 AD
1630-1950 |
AD
1675 AD
1775 AD
1800 AD
1945 |
|
Beta-88747 |
Ab
top, OHRE
#1 |
280
+/- 60 |
-17.4 |
AD
1520-1570 AD
1630-1665 |
AD
1470-1680 |
AD
1650 |
|
Beta-88751 |
Ab
top, OHRE
#2 |
360
+/- 70 |
-18.2 |
AD
1450-1645 |
AD
1425-1665 |
AD
1505 AD
1595 AD
1620 |
|
Beta-99451 |
2Akb
top, CCE
#2 |
380
+/- 80 |
-19.7 |
AD
1440-1640 |
AD
1415-1665 |
AD
1485 |
|
Beta-112971 |
Ab
top, BBE
#3 |
40
+/- 60 |
-16.4 |
AD
1890-1905 |
AD
1680-1745 AD
1805-1935 |
None |
|
Beta-113241 |
Unit
15 top, BCE
#1 |
360
+/- 80 |
-20.0 |
AD
1450-1650 |
AD
1420-1505 AD
1780-1795 AD
1945-1950 |
AD
1505 AD
1595 AD
1620 |
|
Beta-139178 |
Ab
top, AHE
#1 |
320
+/- 70 |
-16.3 |
AD
1470-1650 |
AD
1435-1675 AD
1775-1800 AD
1940-1945 |
AD
1525 AD
1560 AD
1630 |
|
Beta-165843 |
3Akb
top, SSE
#9 |
180
+/- 50 |
-15.3 |
AD
1660-1690 AD
1730-1810 AD
1920-1950 |
AD
1640-1950 |
AD
1670 AD
1770 AD
1800 AD
1940 AD
1950 |
Inception,
Delaware Canyon Pluvial, Estimated Date AD 1450
|
Beta-81136 |
Ab
base, PCE
#1 |
530
+/- 60 |
N/A |
AD
1400-1435 |
AD
1305-1460 |
AD
1420 |
|
Beta-88748 |
Ab
base, OHRE
#1 |
540
+/- 70 |
-16.9 |
AD
1325-1340 AD
1390-1435 |
AD
1295-1470 |
AD
1415 |
|
Beta-88752 |
Ab
base, OHRE
#2 |
440
+/- 70 |
-16.9 |
AD
1425-1495 |
AD
1400-1640 |
AD
1450 |
|
Beta-112972 |
Ab
base, BBE
#3 |
390
+/- 70 |
-15.6 |
AD
1440-1535 AD
1545-1635 |
AD
1420-1655 |
AD
1475 |
|
Beta-113242 |
15A3b, BCE
#1 |
550
+/- 80 |
-16.5 |
AD
1310-1355 AD
1385-1435 |
AD
1290-1475 |
AD
1410 |
|
Beta-139179 |
Ab
base, AHE
#1 |
470
+/- 50 |
-13.0 |
AD
1420-1450 |
AD
1405-1490 |
AD
1435 |
|
Beta-165844 |
3Akb
base, SSE
#9 |
370
+/- 60 |
-14.5 |
AD
1450-1530 AD
1550-1630 |
AD
1430-1650 |
AD
1490 |
Duration
and Termination, Brokenleg Canyon Pluvial, Estimated Terminal Date AD 1300
|
Beta-81137 |
30
cm below top
of 2Ab, PCE
#1 |
860
+/- 70 |
-25.0 |
AD
1055-1090 AD
1150-1260 |
AD
1020-1285 |
AD
1205 |
|
Beta-88749 |
2Akb
top, OHRE
#1 |
660
+/- 70 |
-17.0 |
AD
1285-1400 |
AD
1250-1420 |
AD
1300 |
|
Beta-88753 |
2Ab
top, OHRE
#2 |
810
+/- 60 |
-15.6 |
AD
1195-1275 |
AD
1055-1090 AD
1150-1295 |
AD
1245 |
|
Beta-112048 |
2Ab
base, BBE
#3 |
730
+/- 80 |
-18.2 |
AD
1245-1305 |
AD
1175-1405 |
AD
1285 |
|
Beta-112049 |
2Ab
top NW, BBE
#3 |
670
+/- 60 |
-18.0 |
AD
1285-1325 AD
1340-1390 |
AD
1260-1410 |
AD
1300 |
|
Beta-112973 |
2Ab
top SE, BBE
#3 |
530
+/- 70 |
-16.8 |
AD
1395-1440 |
AD
1300-1475 |
AD
1420 |
|
Beta-113243 |
15A5b, BCE
#1 |
680
+/- 80 |
-15.1 |
AD
1275-1395 |
AD
1220-1420 |
AD
1295 |
|
Beta-113248 |
Unit
5, Profile
2, Trammell
Dune |
740
+/- 60 |
-27.0 |
AD
1250-1295 |
AD
1205-1315 AD
1345-1390 |
AD
1280 |
|
Beta-139180 |
2Ab
top, AHE
#1 |
600
+/- 80 |
-14.7 |
AD
1295-1420 |
AD
1270-1445 |
AD
1325 AD
1345 AD
1395 |
|
Beta-165845 |
4Akb
top, SSE
#9 |
580
+/- 60 |
-15.7 |
AD
1300-1420 |
AD
1290-1440 |
AD
1400 |
|
Beta-162832 |
2Akb
top, PFCE
#1 |
670
+/- 60 |
-18.2 |
AD
1280-1390 |
AD
1260-1410 |
AD
1300 |
|
Beta-162833 |
2Akb
base, PFCE
#1 |
720
+/- 60 |
-19.0 |
AD
1260-1300 |
AD
1210-1390 |
AD
1280 |
|
Beta-165846 |
4Akb
base, SSE
#9 |
610
+/- 60 |
-16.0 |
AD
1300-1410 |
AD
1280-1430 |
AD
1320 AD
1350 AD
1390 |
Inception,
Brokenleg Canyon Pluvial, Estimated Date AD 1150
|
Beta-82361 |
Ab
base, FCE
#1 |
920
+/- 70 |
N/A |
AD
1025-1215 |
AD
995-1265 |
AD
1065 AD
1075 AD
1155 |
|
Beta-113244 |
15A7b, BCE
#1 |
910
+/- 80 |
-14.7 |
AD
1025-1225 |
AD
990-1275 |
AD
1165 |
|
Beta-139181 |
2Ab
base, AHE
#1 |
850
+/- 70 |
-15.3 |
AD
1055-1085 AD
1150-1260 |
AD
1025-1285 |
AD
1205 |
Duration
and Termination, Higgins Creek Pluvial, Estimated Terminal Date AD 1000
|
Beta-90080 |
Upper
Unit 2, 34RM780 |
900
+/- 70 |
-18.9 |
AD
1035-1225 |
AD
1005-1275 |
AD
1170 |
|
Beta-99452 |
3A1kb
top, CCE
#2 |
1140
+/- 80 |
-19.9 |
AD
800-995 |
AD
695-1030 |
AD
895 |
|
Beta-112970 |
3Akb
top, BBE
#3 |
1020
+/- 80 |
-17.3 |
AD
975-1045 AD
1105-1115 |
AD
880-1205 |
AD
1015 |
|
Beta-113247 |