Citation:

PANGAEA.990170

Name: Raw X-ray fluorescence core scanning (XRF-CS) data of a sediment core from Lake Tepetiltic (Nayarit, Mexico)
Published: 2026-06-05
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Anthropocene; biogeochemistry; Carbon accumulation; crater lake; Lake sediment; Mexico; Primary production; Tropical

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Published: 2026-06-05 • DOI registered: 2026-07-04

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Abstract:

Raw X-ray fluorescence core scanning (XRF-CS) data of sediment core LTp22-1 retrieved from Lake Tepetiltic in April 2022. Scans were performed with a 5 mm step size and 30 seconds dwell time. The analysis yielded the ratio of Compton (incoherent) to Rayleigh (coherent) scattering (Inc/coh) that can be used as an indicator of sediment organic matter content. The measurements extend back to the late 1800s. Ages were estimated using Pb-210 dating and Bayesian age-depth modeling.

Keyword(s):

Anthropocene; biogeochemistry; Carbon accumulation; crater lake; Lake sediment; Mexico; Primary production; Tropical

Supplement to:

Rantala, Marttiina V; Israde-Alcántara, Isabel; Safaierad, Reza; Mattielli, Nadine; Tylmann, Wojciech; Smol, John P; Grooms, Christopher; Lepoint, Gilles; Francus, Pierre; Metcalfe, Sarah; Etmański, Paweł; Fagel, Nathalie (2026): Increasing lake primary production and organic carbon sequestration in tropical Mexican lakes during the past century. CATENA, 273, 110448, https://doi.org/10.1016/j.catena.2026.110448

References:

Aquino-Lopez, Marco A; Blaauw, Maarten; Christen, Andrés; Sanderson, Nicole K (2018): Bayesian Analysis of 210Pb Dating. Journal of Agricultural Biological and Environmental Statistics, 23(3), 317-333, https://doi.org/10.1007/s13253-018-0328-7

Funding:

Fonds de la Recherche Scientifique (FNRS), grant/award no. PDR T.0079.21: Holocene Mexican Crater Lakes and Climate (HolMeCl)

Coverage:

Latitude: 21.277661 * Longitude: -104.690167

Date/Time Start: 2022-04-08T00:00:00 * Date/Time End: 2022-04-08T00:00:00

Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 0.200 m

Event(s):

LTp22-1 * Latitude: 21.277661 * Longitude: -104.690167 * Date/Time: 2022-04-08T00:00:00 * Elevation: 1430.0 m * Location: Lake Tepetiltic, Nayarit, Mexico * Method/Device: Sediment corer, UWITEC

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Rantala, Marttiina V		Geocode
2	Age	Age	a AD/CE	Rantala, Marttiina V	Bayesian age model, according to Aquino-López et al. (2018)	Plum version 0.5.1 by Aquino-López et al. (2018, doi:10.1007/s13253-018-0328-7).
3	AGE	Age	ka BP	Rantala, Marttiina V		Geocode
4	Silicon	Si	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
5	Potassium	K	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
6	Calcium	Ca	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
7	Titanium	Ti	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
8	Vanadium	V	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
9	Chromium	Cr	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
10	Manganese	Mn	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
11	Iron	Fe	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
12	Nickel	Ni	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
13	Copper	Cu	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
14	Zinc	Zn	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
15	Germanium	Ge	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
16	Strontium	Sr	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
17	Zirconium	Zr	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
18	Cadmium	Cd	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
19	Cerium	Ce	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
20	Tantalum	Ta	cps	Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax
21	Scattering ratio, incoherent/coherent	icoh/coh scat		Rantala, Marttiina V	X-ray fluorescence core scanner (XRF), Cox Analytical Systems, Itrax

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

779 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Age [a AD/CE]	3 Age [ka BP]	4 Si [cps]	5 K [cps]	6 Ca [cps]	7 Ti [cps]	8 V [cps]	9 Cr [cps]	10 Mn [cps]	11 Fe [cps]	12 Ni [cps]	13 Cu [cps]	14 Zn [cps]	15 Ge [cps]	16 Sr [cps]	17 Zr [cps]	18 Cd [cps]	19 Ce [cps]	20 Ta [cps]	21 icoh/coh scat
0.000	2022.2	-0.07220	55	277	1344	2313	40	181	857	67900	924	539	315	228	1025	870	49	75	1703	9.99
0.005	2020.5	-0.07050	76	90	1490	2643	76	292	841	71482	1047	601	277	743	802	1149	71	78	1859	11.87
0.010	2018.8	-0.06880	99	547	1237	2285	59	212	756	64501	950	443	248	460	1047	893	60	88	1820	11.04
0.015	2016.8	-0.06680	84	168	1438	2639	80	188	844	68508	915	581	192	436	896	1035	38	164	1791	11.01
0.020	2014.9	-0.06490	92	0	1364	2479	153	222	840	69667	994	625	164	413	915	1069	38	39	1754	11.03
0.025	2013.4	-0.06340	109	225	1328	2178	76	222	807	62855	994	565	231	504	674	853	53	73	1781	10.78
0.030	2012.0	-0.06200	32	353	1165	1955	77	242	821	59191	994	602	142	503	736	811	59	96	1763	11.02
0.035	2010.5	-0.06050	61	606	1156	1885	82	166	822	56983	1043	719	132	650	784	722	4	86	1773	10.99
0.040	2009.0	-0.05900	12	238	1108	1601	53	304	752	55337	1093	505	151	702	473	592	44	0	2006	11.73
0.045	2007.1	-0.05710	84	480	1118	1680	41	274	823	55056	955	658	155	402	647	679	58	56	1633	11.06
0.050	2005.3	-0.05530	20	126	1158	1670	13	234	774	52121	1138	587	209	97	486	585	56	37	1808	11.22
0.055	2003.3	-0.05330	8	390	1035	1665	74	192	758	50953	946	625	53	477	697	814	37	58	1681	11.51
0.060	2001.4	-0.05140	50	0	1122	1546	32	216	736	50920	993	488	0	341	758	608	39	0	1860	10.92
0.065	1999.6	-0.04960	25	161	1052	1577	90	221	647	50125	1105	615	164	307	503	607	66	33	1587	11.35
0.070	1997.9	-0.04790	50	11	1158	1887	64	249	691	52474	955	624	210	459	995	429	52	39	1691	11.41
0.075	1995.8	-0.04580	54	219	1114	2267	154	152	766	56736	1049	556	101	486	738	566	59	112	1614	10.79
0.080	1993.8	-0.04380	92	452	1168	2209	117	166	811	58982	936	660	196	294	854	891	67	102	1576	10.73
0.085	1990.6	-0.04060	43	407	1119	2191	133	208	757	62394	903	509	84	492	749	732	39	44	1587	11.06
0.090	1987.4	-0.03740	25	342	1368	2316	122	212	886	65509	964	669	164	149	909	959	44	74	1529	11.23
0.095	1983.3	-0.03330	51	173	1278	2337	44	266	808	63986	900	556	199	242	1056	841	47	74	1614	10.24
0.100	1979.1	-0.02910	27	488	1351	2254	58	321	801	64450	998	579	205	405	848	870	56	35	1425	10.65
0.105	1975.7	-0.02570	131	387	1270	2401	65	252	820	65715	925	477	128	225	824	1050	34	43	1607	11.16
0.110	1972.3	-0.02230	119	201	1187	2149	100	188	777	60641	861	626	208	349	941	866	51	97	1460	10.52
0.115	1969.2	-0.01920	32	409	1322	2426	104	185	760	71779	863	418	178	343	1094	1039	34	116	1585	11.11
0.120	1966.1	-0.01610	92	399	1368	2642	129	239	916	74456	1004	592	301	408	948	1159	57	99	1498	10.59
0.125	1961.7	-0.01170	95	406	1474	2680	121	232	839	70267	936	620	164	314	950	974	31	68	1688	11.12
0.130	1957.2	-0.00720	103	254	1541	2845	142	271	890	75370	932	515	246	388	1028	968	57	28	1757	10.52
0.135	1950.4	-0.00040	67	347	1390	2913	78	263	840	71546	892	600	241	417	860	1052	41	113	1475	10.72
0.140	1943.5	0.00650	87	512	1520	2891	172	225	904	73814	915	620	175	348	983	1030	5	70	1545	10.53
0.145	1936.4	0.01360	116	507	1607	3045	75	226	972	78155	947	668	364	697	1069	1165	61	59	1632	11.39
0.150	1929.3	0.02070	130	402	1683	3107	143	264	927	80843	944	626	325	605	1393	1055	38	28	1585	10.68
0.155	1922.6	0.02740	120	390	1702	3332	158	243	1008	84087	948	612	355	634	1216	1085	28	97	1573	11.13
0.160	1915.9	0.03410	112	361	1626	3343	107	250	928	82637	987	596	442	474	973	1154	56	16	1675	10.60
0.165	1909.7	0.04030	137	573	1670	3117	78	279	949	79915	1037	649	308	398	1105	1243	25	72	1598	10.52
0.170	1903.5	0.04650	78	242	1654	2871	212	298	873	76263	946	680	335	580	1149	1127	39	70	1399	10.88
0.175	1897.6	0.05240	115	360	1463	2919	203	223	791	75084	879	525	140	536	944	998	36	74	1548	10.17
0.180	1891.7	0.05830	121	156	1671	3075	98	316	806	76724	981	558	229	513	1103	908	46	11	1603	10.50
0.185	1885.5	0.06455	125	550	1666	3185	203	268	848	79162	878	645	322	500	1048	1129	18	6	1352	10.65
0.190	1879.2	0.07080	130	137	1666	2959	152	312	792	77218	922	592	173	321	1118	972	50	0	1628	10.61
0.195	1873.0	0.07705	130	315	1657	3101	104	269	853	79244	954	621	297	498	1187	1148	28	10	1468	10.40
0.200	1866.7	0.08330	132	336	1653	3351	100	256	864	82129	974	510	415	487	1080	1305	25	95	1572	11.04