# NOAA Paleoclimatology Program - Speleothem Site Data
# cave-buckeye-bcc-004.txt
# Speleothem data only
# File Created: 17-March-2011
#
#*********************************************************************************
# Please cite the contributor and the original publications when using these data
#*********************************************************************************
#
# Missing Values indicated by '-999'
#
# PI:	B. Hardt	
# Core/Site:	BCC-004/Buckeye Cave     
# Latitude:	37°58.57' N
# Longitude:	80°23.98' W
# Elevation:	600 m
#
# Publications:
#	Hardt, B., H.D. Rowe, G.S. Springer, H. Cheng, and R.L. Edwards. 2010. 
#	The seasonality of east central North American precipitation based on 
#	three coeval Holocene speleothems from southern West Virginia. 
#	Earth and Planetary Science Letters, 295, 342-348.  
#	doi:10.1016/j.epsl.2010.04.002 	
#   
#------------------
#
# Description & Notes:
#	Oxygen isotope data from three stalagmites collected 
#	in Buckeye Creek Cave, West Virginia.  Stalagmites 
#	BCC-4 was collected >1 km from the cave entrance and ~35 m below 
#	the surface. Oxygen isotope samples were milled at 1-mm intervals, 
#	with results reported in per mil V-PDB. 
#	(please see other cores related to this study)  	
#
#------------------
# 
# 230Th dating - Uranium and thorium isotopic compositions and 230Th ages by ICP-MS
#
#	Sample             238U               232Th             d234U          [230Th/238U]        Age (yr BP)       d234Uinitial      Age(yr BP)
#	  ID                ppb                ppt            measured*a         activity*c        uncorrected        corrected      corrected*c,*e
#
#	BCC4-2.5           535 ±1            991  ±19       1560.9 ±2.9      0.00609 ±0.00018        205  ±8        1562.0 ±2.9          184  ±13
#	BCC4-26          747.4 ±1.9         75.6  ±0.4      1564.7 ±2.7       0.0348 ±0.0005        1432  ±20       1571.3 ±2.7         1431  ±20
#	BCC4-63            910 ±40            94  ±4        1592.4 ±2.2       0.0451 ±0.0005        1854  ±21       1601.0 ±2.2         1853  ±21
#	BCC4-87          778.1 ±1.4          894  ±3        1525.5 ±2.5       0.0529 ±0.0006        2247  ±26       1535.5 ±2.5         2235  ±27
#	BCC4-90            740 ±29           352  ±14        1531  ±3         0.0615 ±0.0007        2620  ±30        1542  ±3           2620  ±30
#	BCC4-105         630.7 ±1.2         1025  ±6         1571  ±3         0.0704 ±0.0010        2960  ±40        1585  ±3           2950  ±50
#	BCC4-121           716 ±29          2500  ±100       1559  ±4         0.0847 ±0.0008        3600  ±40        1575  ±4           3560  ±50
#	BCC4-137         698.3 ±1.2         1034  ±5         1594  ±3         0.0965 ±0.0017        4060  ±70        1613  ±3           4050  ±80
#	BCC4-149.5       774.4 ±1.2         95.7  ±1.4      1623.3 ±2.5       0.1049 ±0.0016        4380  ±70       1643.8 ±2.5         4380  ±70
#	BCC4-160         682.0 ±1.0         1570  ±9        1612.9 ±2.7       0.1171 ±0.0020        4920  ±90       1635.6 ±2.7         4900  ±90
#	BCC4-161           860 ±30          2370  ±90       1572.1 ±2.3       0.1206 ±0.0010        5160  ±40       1595.3 ±2.4         5130  ±50
#	BCC4-197.5       720.8 ±1.1         2513  ±7        1675.1 ±2.8       0.1534 ±0.0013        6350  ±60       1705.5 ±2.9         6320  ±60
#	BCC4-215           932 ±1           6811  ±27       1565.2 ±2.5       0.1674 ±0.0008        7270  ±40       1597.6 ±2.6         7180  ±60
#
#	Analytical errors are 2s of the mean.
#	*a d234U = ([234U/238U]activity - 1) x 1000.
#	*b d234Uinitial corrected was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured X el234*T, and T is corrected age.
#	*c [230Th/238U]activity = 1 - e-l230T + (d234Umeasured/1000)[l230/(l230 - l234)](1 - e-(l230 - l234) T), where T is the age.
#	   Decay constants are 9.1577 x 10-6 yr-1 for 230Th, 2.8263 x 10-6 yr-1 for 234U, and 1.55125 x 10-10 yr-1 for 238U (Cheng et al., 2000).
#	*d The degree of detrital 230Th contamination is indicated by the [230Th/232Th] atomic ratio instead of the activity ratio.
#	*e Age corrections were calculated using an average crustal 230Th/232Th atomic ratio of 4.4 x 10-6 ± 2.2 x 10-6.
#	   Those are the values for a material at secular equilibrium, with the crustal 232Th/238U value of 3.8. The errors are arbitrarily 
#	   assumed to be 50%.
#	
# Hiatuses Indentified:
#	depth_mm from 24.5 to 85.5
#	
#----------------
#	
# Variables:
#	depth_mm	Depth (mm)
#	age_calBP	Age (calendar years BP)
#	d18OcarbVPDB	delta18O calcium carbonate (per mil VPDB)
#
# CORE:	BCC-004 
depth_mm	age_calBP	d18OcarbVPDB	
0.5	78	-6.18
1.5	131	-6.09
2.5	184	-6.02
3.5	237	-6.24
4.5	290	-6.27
5.5	343	-6.34
6.5	397	-6.18
7.5	450	-6.1
8.5	503	-6.09
9.5	556	-5.93
10.5	609	-5.98
11.5	662	-6.14
12.5	715	-5.98
13.5	768	-6.21
14.5	821	-6.05
15.5	874	-6.06
16.5	927	-6.04
17.5	980	-6.18
18.5	1033	-6.38
19.5	1086	-6.26
20.5	1140	-6.33
21.5	1193	-6.17
22.5	1246	-6.21
23.5	1299	-6.18
24.5	1352	-6.31
85.5	2209	-6.09
86.5	2226	-6.15
87.5	2262	-6.01
88.5	2316	-5.75
89.5	2371	-5.68
90.5	2425	-5.86
91.5	2479	-5.97
92.5	2534	-6.1
93.5	2588	-6.01
94.5	2630	-5.99
95.5	2660	-6.15
96.5	2690	-5.89
97.5	2720	-5.93
98.5	2750	-5.9
99.5	2781	-6.04
100.5	2811	-6.15
101.5	2841	-6.08
102.5	2871	-6.05
103.5	2901	-6.03
104.5	2931	-5.81
105.5	2965	-5.94
106.5	3002	-5.9
107.5	3040	-6.05
108.5	3077	-5.99
109.5	3114	-5.95
110.5	3152	-6.04
111.5	3189	-5.9
112.5	3227	-6.1
113.5	3264	-6.03
114.5	3302	-6.05
115.5	3339	-6.18
116.5	3377	-5.92
117.5	3414	-6.02
118.5	3452	-6.07
119.5	3489	-6.22
120.5	3526	-6.16
121.5	3564	-6.03
122.5	3595	-6.18
123.5	3626	-6.05
124.5	3658	-5.98
125.5	3689	-6.09
126.5	3720	-5.78
127.5	3752	-6
128.5	3783	-5.91
129.5	3814	-5.92
130.5	3845	-5.77
131.5	3877	-5.84
132.5	3908	-5.83
133.5	3939	-5.94
134.5	3970	-5.69
135.5	4002	-5.91
136.5	4033	-5.92
137.5	4062	-5.89
138.5	4088	-6.11
139.5	4114	-5.77
140.5	4140	-5.67
141.5	4167	-5.74
142.5	4193	-5.78
143.5	4219	-5.91
144.5	4245	-5.75
145.5	4272	-6.07
146.5	4298	-5.83
147.5	4324	-5.87
148.5	4350	-5.72
149.5	4376	-5.75
150.5	4426	-5.69
151.5	4476	-5.65
152.5	4526	-5.75
153.5	4576	-5.62
154.5	4626	-5.63
155.5	4676	-5.59
156.5	4726	-5.63
157.5	4776	-5.62
158.5	4826	-5.61
159.5	4876	-5.55
160.5	4917	-5.54
161.5	4950	-5.66
162.5	4983	-5.56
163.5	5016	-5.67
164.5	5048	-5.73
165.5	5081	-5.81
166.5	5114	-5.69
167.5	5150	-5.68
168.5	5189	-5.73
169.5	5228	-5.78
170.5	5266	-5.61
171.5	5305	-5.53
172.5	5344	-5.71
173.5	5383	-5.7
174.5	5422	-5.69
175.5	5461	-5.64
176.5	5500	-5.78
177.5	5538	-5.83
178.5	5577	-5.83
179	5597	-5.77
179.5	5616	-5.72
180.5	5655	-5.8
181.5	5694	-5.76
182.5	5733	-5.75
183.5	5772	-5.8
184.5	5810	-5.77
185.5	5849	-5.52
186.5	5888	-5.61
187.5	5927	-5.88
188.5	5966	-5.77
189.5	6005	-5.57
190.5	6044	-5.6
191.5	6083	-5.86
192.5	6121	-5.76
193.5	6160	-5.78
194.5	6199	-5.73
195	6219	-5.87
195.5	6238	-6.02
196.5	6277	-6.02
197.5	6316	-5.89
198.5	6370	-5.8
199.5	6424	-5.77
200.5	6479	-5.78
201.5	6533	-5.87
202.5	6587	-5.75
203.5	6641	-5.79
204.5	6696	-5.8
205.5	6750	-5.73
206.5	6804	-6
207.5	6859	-5.8
208.5	6913	-5.75
209.5	6967	-5.66
210.5	7021	-5.64
211.5	7076	-5.69
212.5	7130	-5.58
213.5	7184	-5.59