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 |
Unit
1 top, Profile
2, Trammell
Dune |
1100
+/- 60 |
-23.4 |
AD
885-1005 |
AD
800-1030 |
AD
975 |
|
Beta-114191 |
Upper
Ab, CCC
#2 |
1040
+/- 50 |
-16.4 |
AD
980-1025 |
AD
895-1045 AD
1105-1115 |
AD
1005 |
|
Beta-114193 |
Unit
4 top, 34RM780 |
920
+/- 80 |
-18.0 |
AD
1020-1220 |
AD
985-1275 |
AD
1065 AD
1075 AD
1155 |
|
Beta-115660 |
Lower
Unit 2, 34RM780 |
1190
+/- 60 |
-18.9 |
AD
780-905 AD
920-950 |
AD
690-990 |
AD
875 |
|
Beta-116176 |
Upper
Ab, 34RM208A |
1110
+/- 50 |
-23.8 |
AD
885-995 |
AD
855-1020 |
AD
970 |
|
Beta-116177 |
Upper
Ab, 34RM208A |
1120
+/- 50 |
-22.5 |
AD
885-990 |
AD
800-1015 |
AD
960 |
|
Beta-116183 |
Ab
top, 34RM208C |
1050
+/- 50 |
-25.7 |
AD
975-1020 |
AD
890-1040 |
AD
1000 |
|
Beta-139182 |
3Ab
top, AHE
#1 |
910
+/- 70 |
-15.5 |
AD
1025-1210 |
AD
1000-1265 |
AD
1155 |
|
NZA-1248 |
1.3
m SW F3, 34RM334C |
990
+/- 190 |
-20.3 |
AD
882-1230 |
AD
665-1290 |
AD
1015 |
|
Beta-165847 |
5Akb
top, SSE
#9 |
860
+/- 70 |
-15.3 |
AD
1050-1100 AD1140-1260 |
AD
1020-1280 |
AD
1190 |
|
Beta-162834 |
3Akb
top, PFCE
#1 |
1170
+/- 70 |
-20.1 |
AD
780-970 |
AD
690-1010 |
AD
880 |
Inception,
Higgins Creek Pluvial, Estimated Age AD 775
|
Beta-99453 |
3A1kb
base, CCE
#2 |
1280
+/- 80 |
-21.6 |
AD
665-865 |
AD
635-960 |
AD
720 AD
735 AD
760 |
|
Beta-112046 |
3Akb
base, BBE
#3 |
1250
+/- 70 |
-17.3 |
AD
685-880 |
AD
655-970 |
AD
780 |
|
Beta-115661 |
Unit
4 base, 34RM780 |
1270
+/- 70 |
-19.4 |
AD
675-865 |
AD
650-905 AD
920-950 |
AD
770 |
|
Beta-139183 |
3Ab
base, AHE
#1 |
1080
+/- 70 |
-15.6 |
AD
890-1015 |
AD
785-1040 |
AD
980 |
|
Beta-165848 |
5Akb
base, SSE
#9 |
1120
+/- 50 |
-14.8 |
AD
880-990 |
AD
790-1010 |
AD
910 AD
920 AD
960 |
|
Beta-162835 |
3Akb
base, PFCE
#1 |
1310
+/- 60 |
-20.1 |
AD
660-770 |
AD
640-870 |
AD
690 |
Duration
and Termination, Herring Creek Pluvial, Estimated Terminal Age AD 600
|
Beta-37430 |
Feature
2, 34RM334C |
1500
+/- 80 |
-25.3 |
AD
440-640 |
AD
400-670 |
AD
560 |
|
Beta-81138 |
10
cm above base of 2A/Bkb, PCE
#1 |
1530
+/- 50 |
-25.0 |
AD
465-475 AD
515-605 |
AD
425-640 |
AD
555 |
|
Beta-112045 |
4Akb
top, BBE
#3 |
1370
+/- 70 |
-17.5 |
AD
635-695 |
AD
575-790 |
AD
665 |
|
Beta-113245 |
15A9b, BCE
#1 |
1310
+/- 60 |
-14.2 |
AD
665-780 |
AD
640-875 |
AD
690 |
|
Beta-115663 |
Unit
6A, 34RM780 |
1570
+/- 60 |
-17.4 |
AD
425-575 |
AD
390-630 |
AD
530 |
|
Beta-116178 |
Feature
6, 34RM208A |
1490
+/- 40 |
-27.1 |
AD
555-630 |
AD
530-650 |
AD
600 |
|
Beta-116179 |
Feature
8, 34RM208A |
1520
+/- 50 |
-24.8 |
AD
530-615 |
AD
430-645 |
AD
560 |
|
Beta-116184 |
Feature
24, 34RM208A |
1500
+/- 70 |
-23.7 |
AD
530-640 |
AD
420-665 |
AD
590 |
|
Beta-137106 |
Elev.
98.10 m, 34RM208A |
1540
+/- 60 |
-25.2 |
AD
435-600 |
AD
405-640 |
AD
540 |
|
Beta-137107 |
Feature
19, 34RM208A |
1480
+/- 40 |
-8.6 |
AD
550-630 |
AD
530-650 |
AD
600 |
|
Beta-139184 |
4A1b
top, AHE
#1 |
1550
+/- 60 |
-15.9 |
AD
430-585 |
AD
400-635 |
AD
535 |
|
Beta-162836 |
4Akb
top, PFCE
#1 |
1400
+/- 60 |
-19.9 |
AD
620-670 |
AD
550-710 |
AD
650 |
|
Beta-162838 |
4Akb
top, PFCE
#1 |
1430
+/- 70 |
-20.1 |
AD
570-660 |
AD
460-700 |
AD
640 |
|
NZA-1247 |
1.7
m NNE F3 34RM334C |
1425
+/- 70 |
-25.5 |
AD
560-665 |
AD
445-715 |
AD
645 |
|
NZA-1388 |
Elev.
98.5 m, 34RM208A |
1515
+/- 80 |
-25.5 |
AD
430-630 |
AD
390-660 |
AD
550 |
Inception,
Herring Creek Pluvial, Estimated Age AD 400
|
Beta-18429 |
Ab, 34RM501 |
1680
+/- 80 |
N/A |
AD
317-431 |
AD
207-542 |
AD
388 |
|
Beta-18430 |
Ab, 34RM501 |
1610
+/- 90 |
N/A |
AD
379-542 |
AD
240-641 |
AD
428 |
|
Beta-18431 |
Ab, 34RM501 |
1590
+/- 70 |
N/A |
AD
406-542 |
AD
323-622 |
AD
433 |
|
Beta-18432 |
Ab, 34RM501 |
1650
+/- 70 |
N/A |
AD
338-438 |
AD
240-544 |
AD
412 |
|
Beta-88750 |
2Akb
base, OHRE
#1 |
1600
+/- 80 |
-19.0 |
AD
395-560 |
AD
260-635 |
AD
440 |
|
Beta-99454 |
3A2kb, BKC
#1 |
1790
+/- 70 |
-19.8 |
AD
145-350 |
AD
85-415 |
AD
245 |
|
Beta-112044 |
4Akb
base, BBE
#3 |
1680
+/- 70 |
-15.7 |
AD
265-290 AD
320-435 |
AD
225-550 |
AD
395 |
|
Beta-114195 |
Mat
Line 2, 34RM780 |
1700
+/- 80 |
-17.2 |
AD
245-430 |
AD
145-550 |
AD
380 |
|
Beta-114196 |
Unit
6B base, 34RM780 |
1790
+/- 60 |
-20.0 |
AD
160-340 |
AD
100-405 |
AD
245 |
|
Beta-116180 |
Elev.
98.6 m, 34RM208A |
1690
+/- 50 |
-23.8 |
AD
330-420 |
AD
245-450 |
AD
390 |
|
Beta-116181 |
Feature
10, 34RM208A |
1620
+/- 50 |
-23.2 |
AD
405-530 |
AD
350-560 |
AD
430 |
|
Beta-135654 |
Feature
1, 34RM507 |
1630
+/- 40 |
-23.8 |
AD
400-440 |
AD
350-535 |
AD
420 |
|
Beta-137108 |
Elev.
98.5 m, 34RM208A |
1720
+/- 50 |
-23.6 |
AD
250-400 |
AD
225-425 |
AD
340 |
|
Beta-139185 |
4A1b
base, AHE
#1 |
1520
+/- 60 |
-15.1 |
AD
445-615 |
AD
415-650 |
AD
550 |
|
Beta-162837 |
4Akb
base, PFCE
#1 |
1700
+/- 70 |
-20.0 |
AD
240-420 |
AD
150-530 |
AD
370 |
|
Beta-162839 |
4Akb
base, PFCE
#1 |
1670
+/- 60 |
-19.9 |
AD
330-430 |
AD
240-530 |
AD
400 |
|
NZA-712 |
Feature
1, 34RM334C |
1790
+/- 80 |
-24.9 |
AD
130-335 |
AD
65-414 |
AD
320 |
Duration
and Termination, Finch Canyon Pluvial, Estimated Terminal Age AD 100
|
Beta-114194 |
Unit
9B, 34RM780 |
1840
+/- 80 |
-15.3 |
AD
90-260 |
AD
15-395 |
AD
110 |
|
Beta-115662 |
Unit
9B, 34RM780 |
1950
+/- 70 |
-16.7 |
BC
5 - AD
130 |
BC
75 - AD
235 |
AD
70 |
|
Beta-115666 |
Unit
9B, 34RM780 |
2010
+/- 60 |
-19.5 |
BC
50 - AD
70 |
BC
165 - AD
120 |
AD
5 |
|
Beta-115668 |
Unit
9B, 34RM780 |
1930
+/- 60 |
-26.8 |
AD
25-135 |
BC
40 - AD
235 |
AD
85 |
|
Beta-116182 |
Elev.
98.2 m, 34RM208A |
1870
+/- 50 |
-23.7 |
AD
90-225 |
AD
55-250 |
AD
135 |
|
Beta-116185 |
West
end, L5, 34RM208A |
1910
+/- 50 |
-23.4 |
AD
65-145 |
AD
5-235 |
AD
100 |
|
Beta-136173 |
Feature
2, 34RM507 |
1970
+/- 50 |
-22.8 |
BC
30 - AD
80 |
BC
60 - AD
130 |
AD
45 |
|
Beta-141601 |
Unit
410, 34RM507 |
1980
+/- 30 |
-25.6 |
BC
5 - AD
60 |
BC
45 - AD
80 |
AD
30 |
|
NZA-1246 |
Feature
2, 34RM334C |
1900
+/- 90 |
-24.3 |
AD
10-220 |
BC
100 - AD
330 |
AD
100 |
Inception,
Finch Canyon Pluvial, Estimated Age BC
50
|
Beta-82362 |
A/Bhkb
base, FCE
#1 |
2070
+/- 80 |
-25.0 |
BC
180 - AD
25 |
BC
335-290 BC
230- AD
100 |
BC
50 |
|
Beta-90081 |
Unit
9B base, 34RM780 |
2070
+/- 90 |
-17.7 |
BC
185 - AD
45 |
BC
365 - AD
120 |
BC
50 |
|
Beta-135655 |
Elev.
94.0 m, 34RM507 |
2070
+/- 40 |
-25.8 |
BC
155-40 |
BC
185 - AD
20 |
BC
60 |
A total of 95
radiocarbon dates.
Legend of Dempsey Divide Late Holocene
Paleosol Localities and Archeological Sites:
AHE#1 = Antelope Hills Exposure #1, NW/4 33-17N-25W; BCE #1 = Bean Creek Exposure #1, NW/4 2-12N-24W; BBE #3 = Brokenleg Bend Exposure #3, SW/4 34-13N-24W; CCE #2 = Catamount Canyon Exposure #2, NW/4 33-13N-24W; CCC #2 = Catamount Canyon Core #2, NW/4 33-13N-24W; FCE #1 = Finch Canyon Exposure #1, NE/4 5-12N-24W; OHRE #1 = Old Herring Ranch Exposure #1, NE/4 3-13N-22W; OHRE #2 = Old Herring Ranch Exposure #2, NE/4 9-13N-22W; PCE #1 = Plum Creek Exposure #1, center 23-13N-24W; PFCE #1 = Pitchfork Canyon Exposure #1, NE/4 33-13N-24W; SSE #9 = Shinnery Springs Exposure #9, SW/4 26-13N-25W; 34RM208A&C, NW/4 4-12N-24W; 34RM334C, SE/4 30-13N-23W; 34RM501 NE/4 10-13N-25W; 34RM507 SW/4 29-13N-23W; 34RM780 NE/4 31-13N-23W; all in Roger Mills County, Oklahoma.