#----------------------------------------------------------------------- 
#                World Data Center for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#----------------------------------------------------------------------- 
# NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. 
#
# Online_Resource: hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:16114
# Online_Resource: ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/colorado/sanluis2013.txt
#
# Original_Source_URL: 
# 
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Paleolimnology
#--------------------
# Contribution_Date
#	Date: 2013-10-25
#--------------------
# Title
#	Study_Name: Late Glacial and Holocene record of climatic change in the southern Rocky Mountains from sediments in San Luis Lake, Colorado, USA
#--------------------
# Investigators
#       Investigators: Yuan,F.;Korana M.R.;Valdez,A.
#--------------------
# Description_and_Notes
#   Description: Isotopic data from San Luis Lake, Colorado, USA. Keywords - stable isotope, North American monsoon, late Glacial, Holocene, San Luis Lake, Rocky Mountain
#--------------------
# Publication 
#       Authors:  Fasong Yuan, Max R. Korana, Andrew Valdez
#       Published_Date_or_Year: 2013-09-25
#       Published_Title: Late Glacial and Holocene record of climatic change in the southern Rocky Mountains from sediments in San Luis Lake, Colorado, USA
#       Journal_Name: Palaeogeography, Palaeoclimatology, Palaeoecology
#       Volume: 392
#       Edition:
#       Issue:
#       Pages: 146-160
#       Report_Number: 
#       DOI: dx.doi.org/10.1016/j.palaeo.2013.09.016
#       Publication_Place: 
#       Publisher: 
#       ISBN: 
#       Online_Resource:
#       Other_Reference_Details:
#       Full_Citation: 
#       Abstract: Large rapid climate changes occurred over the last glacial cycle in the southwestern United States and elsewhere in many regions of the world. Some of these changes were attributed to alternations between stadial and interstadial conditions in the North Atlantic. But intense debate exists on how climate anomalies in the North Atlantic transmit to the southwest. Here we report a sediment record from San Luis Lake in southern Colorado, through analyses of grain size, magnetic susceptibility, Mg/Ca, total inorganic carbon, δ18O and δ13C, to indicate climatic and environmental changes in the southern Rocky Mountains over the last 16.5 ka. We found that San Luis Lake remained hydrologically closed most of the time but overflowed during the second half of the Mystery Interval (the Big Wet: 15.7–14.9 ka) and the latter part of the mid-Holocene (the Neopluvial: 4–3 ka). Over the course of the last deglaciation, San Luis Lake underwent a series of large millennial-scale hydroclimatic changes such as the Big Dry (16.5–15.7 ka), the Big Wet, the Bølling–Allerød dry (14.9–12.7 ka), and the Younger Dryas wet (12.8–11.6 ka), corresponding to warm/cold phases in the high-latitude Northern Hemisphere. The North American monsoon waxed during the Pre-Boreal interval (11.6–10.5 ka) and waned through the Holocene, in phase with northward and southward displacement of the intertropical convergence zone (ITCZ). The San Luis Lake basin was relatively dry in the early Holocene (10.5–6.7 ka), wet and fluctuating in the mid-Holocene (6.7–2.6 ka), and dry and less variable in the late Holocene (2.6–0 ka). We found evidence that extreme pluvial episodes of the southern Rocky Mountains and elsewhere in the American Southwest were coeval with cold phases of the North Pacific. Our results highlight the role of the North Pacific in modulating atmospheric circulations over the region on millennial timescales.
#------------------
# Funding_Agency
#       Funding_Agency_Name: U.S. National Science Foundation
#       Grant: EAR-0902895
#------------------
# Funding_Agency
#       Funding_Agency_Name: Faculty Research Development from Cleveland State University
#       Grant:
#------------------
# Site_Information 
#   Site_Name: San Luis Lake
#   Location: Colorado
#	Region: Southwestern North America
#	Country: United States
#	Northernmost_Latitude: 37.675
# 	Southernmost_Latitude: 37.675
# 	Easternmost_Longitude: 105.723
# 	Westernmost_Longitude: 105.723
# 	Elevation: 2300
#------------------
# Data_Collection
#	Collection_Name: San Luis
#	Earliest_Year: 16.57
#	Most_Recent_Year: 5.8
#	Time_Unit: cal kyr BP
#	Core_Length:
#	Notes: 
#------------------
# Species:
#------------------
# Chronology: 
#----------------	
# Variables
#	Short_name	What,Material,Error,Units, Seasonality,Archive,Details,Method,Data_type
## depth-cm	Depth,,cm,,,,,,N
## age_ka_bp	Age,,,,cal yr ka bp,,,,,N
## %caco3sed	caco3,sediment,,,percent,paleolimnology,,,N	
## d13CcarbVPDB	delta 13C,calcium carbonate,,,per mil VPDB,paleolimnology,,,N
## d18OcarbVPDB	delta 18O,calcium carbonate,,,per mil VPDB,paleolimnology,,,N	
#----------------
# Data
# Missing_Values: 
#
# Data line format - tab-delimited text, variable short name as header
depth-cm	age_ka_bp	%caco3sed	d13CcarbVPDB	d18OcarbVPDB	Notes
1	0.01	5.8	-1.4	0.7	Core SL-A
2	0.02	7.0	-1.4	-3.8	Core SL-A
3	0.03	8.5	-0.9	-3.6	Core SL-A
4	0.03	8.1	-1.1	-2.5	Core SL-A
5	0.04	10.1	-1.0	-3.6	Core SL-A
6	0.05	10.1	-1.0	-3.5	Core SL-A
7	0.06	12.6	-0.8	-3.3	Core SL-A
8	0.07	11.5	-0.8	-2.8	Core SL-A
9	0.08	10.7	-1.0	-3.2	Core SL-A
10	0.09	10.7	-0.9	-3.2	Core SL-A
11	0.09	9.7	-0.9	-3.1	Core SL-A
12	0.10	6.3	-1.4	-3.3	Core SL-A
13	0.11	7.3	-1.3	-3.1	Core SL-A
14	0.12	5.9	-1.6	-3.2	Core SL-A
15	0.13	5.4	-1.7	-3.1	Core SL-A
16	0.14	5.6	-1.5	-3.0	Core SL-A
17	0.15	3.8	-2.2	-3.1	Core SL-A
18	0.15	5.1	-2.5	-2.8	Core SL-A
19	0.16	4.1	-2.8	-2.7	Core SL-A
20	0.17	4.6	-2.8	-3.0	Core SL-A
21	0.18	3.8	-2.8	-2.4	Core SL-A
22	0.19				Core SL-A
23	0.20	3.8	-3.3	-1.8	Core SL-A
24	0.21	3.3	-3.2	-2.2	Core SL-A
25	0.21	3.5	-2.9	-2.2	Core SL-A
26	0.22	3.3	-3.2	-2.8	Core SL-A
27	0.23	3.2	-3.0	-2.4	Core SL-A
28	0.24	3.0	-3.4	-2.1	Core SL-A
29	0.25	3.1	-3.6	-2.3	Core SL-A
30	0.26	3.1	-3.4	-2.2	Core SL-A
31	0.26	3.1	-3.5	-1.5	Core SL-A
32	0.27	3.1	-3.8	-2.1	Core SL-A
33	0.28	2.9	-3.8	-1.9	Core SL-A
34	0.29	2.8	-4.0	-2.3	Core SL-A
35	0.30	2.4	-3.9	-2.2	Core SL-A
36	0.31	3.1	-3.8	-1.5	Core SL-A
37	0.32	2.9	-4.4	-2.4	Core SL-A
38	0.32	3.1	-4.0	-1.7	Core SL-A
39	0.35	2.6	-4.6	-1.0	Core SL-A
40	0.44	2.7	-3.8	-2.8	Core SL-A
41	0.52	2.7	-4.6	-2.1	Core SL-A
42	0.61	3.1	-4.0	-1.5	Core SL-A
43	0.69	4.1	-4.4	-1.4	Core SL-A
44	0.77	5.5	-4.5	-0.9	Core SL-A
45	0.86	6.0	-4.7	-0.8	Core SL-A
46	0.94	7.5	-4.6	-1.0	Core SL-A
47	1.03	5.6	-4.6	-1.2	Core SL-A
48	1.11	5.9	-4.6	-1.0	Core SL-A
49	1.19	5.9	-4.8	-1.5	Core SL-A
50	1.28	5.9	-4.7	-1.2	Core SL-A
51	1.36	5.9	-4.7	-1.1	Core SL-A
52	1.44	6.6	-4.7	-1.5	Core SL-A
53	1.53	6.6	-4.4	-1.4	Core SL-A
54	1.61	7.4	-4.3	-1.4	Core SL-A
55	1.69	9.0	-4.3	-1.6	Core SL-A
56	1.78	7.8	-4.2	-1.4	Core SL-A
57	1.86	6.7	-4.3	-1.6	Core SL-A
58	1.94	7.9	-4.5	-1.5	Core SL-A
59	2.02	6.1	-4.4	-1.3	Core SL-A
60	2.11	6.5	-4.8	-1.5	Core SL-A
61	2.19	6.1	-4.7	-1.7	Core SL-A
62	2.27	6.0	-4.7	-1.8	Core SL-A
63	2.35	5.0	-5.0	-2.1	Core SL-A
64	2.43	2.8	-5.2	-2.0	Core SL-A
65	2.52	1.5	-6.2	-3.4	Core SL-A
66	2.60	1.2	-7.2	-4.5	Core SL-A
67	2.68	0.8	-6.2	-4.7	Core SL-A
68	2.76	0.5	-9.8	-8.1	Core SL-A
69	2.84	0.4	-13.5	-10.9	Core SL-A
70	2.92	0.6	-8.1	-6.0	Core SL-A
71	3.00	0.7	-8.5	-5.5	Core SL-A
72	3.09	0.5			Core SL-A
73	3.17	0.3	-8.9	-7.9	Core SL-A
74	3.25	0.4	-9.6	-8.1	Core SL-A
75	3.33	0.6	-9.9	-8.6	Core SL-A
76	3.41	1.1	-12.2	-10.9	Core SL-A
77	3.49	0.8	-11.8	-12.3	Core SL-A
78	3.57		-8.9	-6.6	Core SL-A
79	3.65	1.5	-9.3	-6.6	Core SL-A
80	3.73	2.0	-7.6	-5.4	Core SL-A
81	3.81	2.5	-7.4	-5.5	Core SL-A
82	3.89	4.1	-7.2	-4.4	Core SL-A
83	3.97	5.1	-6.3	-4.6	Core SL-A
84	4.05	7.0	-6.5	-5.1	Core SL-A
85	4.13	8.6	-6.2	-5.2	Core SL-A
86	4.21	10.2	-6.9	-8.4	Core SL-A
87	4.29	12.0	-6.7	-7.8	Core SL-A
88	4.37		-7.5	-8.9	Core SL-A
89	4.45	11.1	-5.2	-4.9	Core SL-A
90	4.53	12.1	-5.5	-6.5	Core SL-A
91	4.61	13.3	-5.9	-7.2	Core SL-A
92	4.69	13.2	-5.3	-6.1	Core SL-A
93	4.77	13.0	-5.3	-6.5	Core SL-A
94	4.85	15.0	-4.0	-4.9	Core SL-A
95	4.92	13.7	-5.1	-6.5	Core SL-A
96	5.00	9.5	-6.0	-7.4	Core SL-A
97	5.08	9.8	-6.9	-8.1	Core SL-A
98	5.16	8.9	-5.2	-6.6	Core SL-A
99	5.24	9.0	-5.5	-7.3	Core SL-A
100	5.32	8.2	-5.1	-6.3	Core SL-A
101	5.39	7.3	-5.3	-6.1	Core SL-A
102	5.47	6.2	-5.5	-6.1	Core SL-A
103	5.55	8.0	-5.8	-7.0	Core SL-A
104	5.63	4.7	-5.9	-7.7	Core SL-A
105	5.71	8.9	-5.1	-5.4	Core SL-A
106	5.78	7.1	-4.7	-3.9	Core SL-A
107	5.86	4.0	-6.3	-6.5	Core SL-A
108	5.94	2.8	-5.7	-5.2	Core SL-A
109	6.02	4.7	-5.3	-5.2	Core SL-A
110	6.09	5.8	-5.6	-5.3	Core SL-A
111	6.17	6.5	-4.8	-5.1	Core SL-A
112	6.25	7.6	-4.6	-5.3	Core SL-A
113	6.32	6.8	-4.2	-5.5	Core SL-A
114	6.40		-2.9	-4.8	Core SL-A
115	6.48	7.1	-1.6	-4.6	Core SL-A
116	6.55	8.9	-3.6	-5.4	Core SL-A
117	6.63	5.5	-3.4	-5.1	Core SL-A
118	6.71	4.1	-3.1	-3.1	Core SL-A
119	6.78	4.0	-1.3	-3.4	Core SL-A
120	6.86	10.8	-1.1	-2.7	Core SL-B
121	6.94	9.9	-1.2	-3.1	Core SL-B
122	7.01	8.5	-1.2	-2.8	Core SL-B
123	7.09	10.4	-1.2	-2.8	Core SL-B
124	7.16	9.5	-1.2	-2.8	Core SL-B
125	7.24	9.3	-1.4	-3.0	Core SL-B
126	7.32	8.7	-1.3	-2.9	Core SL-B
127	7.39	8.1	-1.3	-2.9	Core SL-B
128	7.47	9.5	-1.3	-2.9	Core SL-B
129	7.54	7.5	-1.4	-2.8	Core SL-B
130	7.62	6.4	-1.7	-2.7	Core SL-B
131	7.69	6.3	-1.7	-2.4	Core SL-B
132	7.77	5.7	-1.8	-2.6	Core SL-B
133	7.84	6.3	-1.7	-2.7	Core SL-B
134	7.92	6.3	-2.1	-2.2	Core SL-B
135	7.99	5.6	-2.4	-2.2	Core SL-B
136	8.07	5.1	-2.5	-2.2	Core SL-B
137	8.14	4.8	-2.4	-2.3	Core SL-B
138	8.21	5.0	-2.5	-2.6	Core SL-B
139	8.29	5.0	-2.7	-2.2	Core SL-B
140	8.36	6.2	-3.0	-2.0	Core SL-B
141	8.44	4.8	-3.5	-1.9	Core SL-B
142	8.51	4.9	-3.9	-2.2	Core SL-B
143	8.58	5.7	-3.8	-1.9	Core SL-B
144	8.66	0.0			Core SL-B
145	8.73	6.0	-4.0	-1.5	Core SL-B
146	8.81	6.5	-3.8	-1.4	Core SL-B
147	8.88	6.5	-3.7	-1.7	Core SL-B
148	8.95	5.7	-3.8	-1.5	Core SL-B
149	9.03	6.7	-3.9	-1.4	Core SL-B
150	9.10	4.8	-4.8	-1.6	Core SL-B
151	9.17	5.5	-4.8	-1.2	Core SL-B
152	9.24	6.5	-4.7	-1.2	Core SL-B
153	9.32	7.9	-4.6	-1.5	Core SL-B
154	9.39	7.7	-4.6	-1.4	Core SL-B
155	9.46	7.8	-4.3	-1.1	Core SL-B
156	9.54	6.9	-4.3	-1.3	Core SL-B
157	9.61	7.1	-4.5	-2.2	Core SL-B
158	9.68	6.6	-4.6	-2.0	Core SL-B
159	9.75	5.8	-4.5	-1.5	Core SL-B
160	9.82	5.5	-4.3	-1.3	Core SL-B
161	9.90	6.0	-4.3	-1.4	Core SL-B
162	9.97	6.0	-4.3	-1.3	Core SL-B
163	10.04	5.6	-4.5	-1.3	Core SL-B
164	10.11	5.6	-4.4	-1.2	Core SL-B
165	10.18	6.0	-4.7	-1.4	Core SL-B
166	10.25	7.1	-4.4	-1.3	Core SL-B
167	10.33	7.9	-4.3	-1.4	Core SL-B
168	10.40	7.0	-4.5	-1.5	Core SL-B
169	10.47	6.2	-4.6	-1.5	Core SL-B
170	10.54	5.8	-4.9	-1.7	Core SL-B
171	10.61	4.6	-5.1	-1.7	Core SL-B
172	10.68	5.0	-5.1	-2.1	Core SL-B
173	10.75	4.3	-5.6	-2.5	Core SL-B
174	10.82	1.9	-6.7	-3.5	Core SL-B
175	10.89	2.0	-6.0	-3.0	Core SL-B
176	10.96	1.8	-6.2	-3.7	Core SL-B
177	11.03	1.6	-6.1	-4.0	Core SL-B
178	11.10	1.6	-6.7	-4.8	Core SL-B
179	11.17	2.6	-6.0	-4.0	Core SL-B
180	11.24	3.5	-6.7	-5.0	Core SL-B
181	11.31	4.3	-6.2	-4.4	Core SL-B
182	11.38	4.8	-5.8	-4.1	Core SL-B
183	11.45		-6.1	-5.0	Core SL-B
184	11.52	4.5	-6.5	-5.6	Core SL-B
185	11.59	5.4	-6.5	-5.8	Core SL-B
186	11.66	5.8	-5.9	-5.2	Core SL-B
187	11.73	8.6	-5.3	-5.0	Core SL-B
188	11.80	11.5	-5.3	-5.2	Core SL-B
189	11.87	10.6	-5.1	-5.3	Core SL-B
190	11.94	11.1	-4.8	-5.1	Core SL-B
191	12.01	12.0	-4.9	-5.4	Core SL-B
192	12.08	11.2	-4.4	-5.1	Core SL-B
193	12.14	8.8	-4.1	-5.4	Core SL-B
194	12.21	10.4	-4.3	-5.0	Core SL-B
195	12.28	9.6	-4.6	-4.9	Core SL-B
196	12.35	7.2	-4.8	-4.9	Core SL-B
197	12.42	9.1	-4.6	-4.0	Core SL-B
198	12.49	6.8	-4.8	-4.4	Core SL-B
199	12.55	5.3	-4.6	-3.9	Core SL-B
200	12.62	7.1	-4.4	-3.5	Core SL-B
201	12.69	8.5	-3.9	-2.9	Core SL-B
202	12.76	9.5	-3.8	-2.7	Core SL-B
203	12.83	10.4	-4.0	-2.8	Core SL-B
204	12.89	8.4	-4.2	-3.3	Core SL-B
205	12.96	6.7	-4.4	-3.5	Core SL-B
206	13.03	5.7	-4.4	-3.9	Core SL-B
207	13.10	4.2	-5.4	-4.6	Core SL-B
208	13.16	5.3	-4.8	-4.0	Core SL-B
209	13.23	4.9	-4.3	-3.9	Core SL-B
210	13.30	7.1	-3.3	-3.5	Core SL-B
211	13.36	7.1	-3.0	-3.2	Core SL-B
212	13.43	14.3	-2.4	-2.5	Core SL-B
213	13.50	10.6	-2.3	-2.6	Core SL-B
214	13.56	8.9	-1.7	-2.3	Core SL-B
215	13.63	10.4	-1.5	-2.5	Core SL-B
216	13.70	8.0	-2.4	-3.4	Core SL-B
217	13.76		-3.1	-3.3	Core SL-B
218	13.83	9.9	-2.6	-2.9	Core SL-B
219	13.89	5.8	-3.5	-3.1	Core SL-B
220	13.96		-3.4	-4.0	Core SL-B
221	14.03	5.2	-2.8	-2.8	Core SL-B
222	14.09	5.1	-3.1	-3.2	Core SL-B
223	14.16	5.2	-3.8	-3.3	Core SL-B
224	14.22		-4.3	-4.1	Core SL-B
225	14.29	6.9	-3.4	-2.7	Core SL-B
226	14.35	6.9	-3.5	-2.8	Core SL-B
227	14.42	5.5	-3.6	-2.7	Core SL-B
228	14.48	4.7	-3.5	-2.6	Core SL-B
229	14.55	5.2	-3.6	-2.7	Core SL-B
230	14.61		-4.1	-3.2	Core SL-B
231	14.68		-3.7	-2.6	Core SL-B
232	14.74		-4.6	-4.5	Core SL-B
233	14.81		-4.1	-3.3	Core SL-B
234	14.87		-3.4	-2.4	Core SL-B
235	14.94				Core SL-B
236	15.00		-4.3	-4.1	Core SL-B
237	15.06		-4.0	-4.0	Core SL-B
238	15.13	1.9	-4.3	-3.8	Core SL-B
239	15.19		-6.2	-8.3	Core SL-B
240	15.26		-7.1	-12.8	Core SL-B
241	15.32		-7.0	-10.8	Core SL-B
242	15.38		-5.9	-8.4	Core SL-B
243	15.45		-5.7	-8.1	Core SL-B
244	15.51		-8.1	-13.9	Core SL-B
245	15.57		-8.3	-10.5	Core SL-B
246	15.64		-7.9	-10.7	Core SL-B
247	15.70		-4.5	-4.6	Core SL-B
248	15.76		-4.2	-3.9	Core SL-B
249	15.83		-4.2	-4.0	Core SL-B
250	15.89		-4.2	-4.2	Core SL-B
251	15.95		-4.0	-3.5	Core SL-B
252	16.01	28.9	-4.0	-3.6	Core SL-B
253	16.08	31.7	-4.1	-3.6	Core SL-B
254	16.14	37.6	-4.0	-3.6	Core SL-B
255	16.20	36.5	-4.1	-3.9	Core SL-B
256	16.26	33.6	-4.2	-3.7	Core SL-B
257	16.33	37.2	-4.2	-3.7	Core SL-B
258	16.39		-4.2	-3.8	Core SL-B
259	16.45	33.7	-4.2	-3.7	Core SL-B
260	16.51	30.0	-4.2	-3.9	Core SL-B
261	16.57		-4.3	-4.2	Core SL-B