Geochronology and Geochemistry of the Ore-related Magmatic Rocks from the Yongxin Gold Deposit, Northwest Xiao Hinggan Mountains and Their Ore-forming Tectonic Implication

Abstract

Abstract:

The Yongxin gold deposit is a large-scale fracture-controlled alteration type deposit found in Xiao Hinggan Mountains in recent years. The dioritic porphyry intersected with the orebodies and intruded into the hanging wall volcanic rocks of the Longjiang Formation. The LA-ICP-MS U-Pb zircon dating of the andesite and dioritic porphyry yield concordant ages of (113.7±1.8) Ma and (114.8±1.9) Ma, respectively, implying that they formed at the Early Cretaceous. The geochemical data of the andesite and dioritic porphyry show large variations in Na and K contents, intermediate concentrations of Ca and Mg and enrichment in Al and Fe. From the volcanic rocks to the dyke, the petrochemical features indicate a transition from calc-alkaline to alkaline. They display uniform REE distribution patterns with ores, but the ores exhibit relatively lower REE concentration. The trace elements of the samples generally enrich in Zr, Hf, Nd and U, and deplete in Nb, Ta, Th, P and Ti. The samples are plotted into the field of classic island arc rocks in Sr/Y vs. Y and (La/Yb)_N vs.(Yb)_N discrimination diagrams, and the field of volcanic arc granite in Nb vs. Y and Ta vs. Yb diagrams, and the crust-mantle granite field in the (La/Yb)_N vs. δEu diagram. Combined with the S, Pb and Fe isotopes of pyrite, spatial and temporal distribution of regional gold deposits and geochemical features of rocks and ores, we suggest that the formation of the Yongxin gold deposit are genetically related to the volcanic-magmatism associated with upwelling of mantle materials trigged by the rollback of subducted paleo-Pacific plate in the Early Cretaceous.

Key words: andesite, diorite porphyry, zircon U-Pb age, geochemical characteristic, tectonic implication, Yongxin gold deposit, Xiao Hinggan Mountains

CLC Number:

P588.13
P597

LI Chenglu, XU Wenxi, YU Yuanbang, LI Guanghui, LI Shengrong, YUAN Maowen, LI Shisheng, XU Guozhan. Geochronology and Geochemistry of the Ore-related Magmatic Rocks from the Yongxin Gold Deposit, Northwest Xiao Hinggan Mountains and Their Ore-forming Tectonic Implication[J]. Geoscience, 2017, 31(06): 1114-1130.

Figures/Tables 17

References 66

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测点
18022-01	10.65	726	381	1.769 5	117	1.6	143	126	119	2.6	0.048 9	0.002 6	0.122 9	0.006 4	0.018 3	0.000 2
18022-02	63.30	777	663	1.121 4	448	3.4	465	52	445	6.6	0.056 3	0.001 3	0.562 3	0.013 4	0.072 0	0.000 6
18022-03	39.20	578	1 029	0.517 1	207	1.8	406	69	214	4.9	0.054 8	0.001 6	0.250 0	0.008 0	0.032 7	0.000 3
18022-04	32.90	554	795	0.663 9	212	2.7	809	112	257	10.8	0.066 1	0.003 4	0.315 2	0.019 4	0.033 4	0.000 4
18022-05	1.98	89	85	1.002 4	115	2.9	235	219	117	4.9	0.050 9	0.005 1	0.119 6	0.010 3	0.018 1	0.000 5
18022-06	2.51	135	110	1.176 8	108	2.2	456	186	105	3.6	0.055 9	0.004 8	0.128 0	0.010 0	0.016 8	0.000 3
18022-07	2.32	111	88	1.182 8	113	2.3	1 263	173	133	5.4	0.082 7	0.007 3	0.196 5	0.014 8	0.017 6	0.000 4
18022-08	3.60	217	141	1.470 3	112	1.8	109	224	109	3.2	0.048 2	0.003 4	0.115 1	0.007 7	0.017 5	0.000 3
18022-09	68.90	552	1 157	0.453 7	324	3.8	800	74	365	12.7	0.065 8	0.002 4	0.477 8	0.019 6	0.051 5	0.000 6
18022-10	26.55	377	700	0.511 6	205	2.2	276	76	205	5.0	0.051 8	0.001 7	0.231 1	0.007 4	0.032 2	0.000 3
18022-11	7.29	417	236	1.643 0	116	1.8	1 544	93	139	3.3	0.095 8	0.004 7	0.238 8	0.011 0	0.018 2	0.000 3
18022-12	2.77	133	114	1.112 1	116	2.4	220	227	109	4.0	0.050 5	0.004 2	0.123 3	0.009 9	0.018 1	0.000 4
18022-13	2.88	144	114	1.179 4	112	2.4	833	179	133	9.5	0.066 5	0.005 7	0.160 3	0.013 7	0.017 6	0.000 4
18022-14	2.79	113	116	0.928 7	115	2.4	676	172	125	4.7	0.062 1	0.005 0	0.152 3	0.011 9	0.018 0	0.000 4
18022-15	22.45	318	400	0.778 3	286	3.3	483	96	289	6.7	0.056 8	0.002 5	0.356 9	0.015 4	0.045 4	0.000 5
18022-16	1.72	79	72	1.065 4	116	3.2	733	269	106	4.6	0.061 8	0.007 7	0.141 4	0.015 0	0.018 1	0.000 5
18022-17	2.34	114	92	1.196 5	112	2.4	922	244	126	4.8	0.069 5	0.008 0	0.166 8	0.019 6	0.017 6	0.000 4
18022-18	3.44	166	146	1.030 4	113	2.1	124	193	114	3.7	0.048 5	0.004 2	0.114 7	0.009 1	0.017 6	0.000 3
18022-19	3.60	230	133	1.555 5	111	2.3	483	152	112	3.4	0.056 8	0.003 9	0.134 0	0.008 5	0.017 3	0.000 4
18022-20	2.01	88	84	1.005 7	118	2.7	146	215	117	5.1	0.049 0	0.004 8	0.121 2	0.010 4	0.018 5	0.000 4
18022-21	2.22	87	92	0.892 3	121	2.6	235	274	129	5.9	0.050 9	0.006 6	0.121 4	0.010 0	0.019 0	0.000 4
18022-22	2.01	76	73	0.997 5	117	2.6	1 472	158	157	6.9	0.092 2	0.007 7	0.224 9	0.014 9	0.018 3	0.000 4
18022-23	119.67	45	733	0.057 7	907	7.7	1 161	75	2 480	152.3	0.078 5	0.001 7	1.652 1	0.037 8	0.151 0	0.001 4
18022-24	32.50	243	366	0.638 1	440	4.9	524	63	563	17.4	0.057 9	0.001 7	0.567 5	0.016 5	0.070 6	0.000 8
18022-25	14.63	175	385	0.442 6	208	2.1	272	83	222	7.3	0.051 7	0.001 9	0.234 9	0.008 2	0.032 8	0.000 3
18022-26	3.17	168	129	1.260 8	111	2.2	457	170	113	3.8	0.056 1	0.004 3	0.130 8	0.008 9	0.017 3	0.000 4
18022-27	1.70	62	73	0.839 3	118	2.1	283	236	114	5.5	0.052 0	0.005 4	0.125 8	0.010 8	0.018 4	0.000 3
18022-28	34.70	413	556	0.735 3	307	3.2	833	63	373	8.2	0.066 8	0.002 0	0.450 2	0.012 8	0.048 7	0.000 5
18022-29	30.10	392	533	0.714 5	291	2.9	283	72	292	7.3	0.052 0	0.001 6	0.333 2	0.010 5	0.046 1	0.000 5

测点
18022-01	10.65	726	381	1.769 5	117	1.6	143	126	119	2.6	0.048 9	0.002 6	0.122 9	0.006 4	0.018 3	0.000 2
18022-02	63.30	777	663	1.121 4	448	3.4	465	52	445	6.6	0.056 3	0.001 3	0.562 3	0.013 4	0.072 0	0.000 6
18022-03	39.20	578	1 029	0.517 1	207	1.8	406	69	214	4.9	0.054 8	0.001 6	0.250 0	0.008 0	0.032 7	0.000 3
18022-04	32.90	554	795	0.663 9	212	2.7	809	112	257	10.8	0.066 1	0.003 4	0.315 2	0.019 4	0.033 4	0.000 4
18022-05	1.98	89	85	1.002 4	115	2.9	235	219	117	4.9	0.050 9	0.005 1	0.119 6	0.010 3	0.018 1	0.000 5
18022-06	2.51	135	110	1.176 8	108	2.2	456	186	105	3.6	0.055 9	0.004 8	0.128 0	0.010 0	0.016 8	0.000 3
18022-07	2.32	111	88	1.182 8	113	2.3	1 263	173	133	5.4	0.082 7	0.007 3	0.196 5	0.014 8	0.017 6	0.000 4
18022-08	3.60	217	141	1.470 3	112	1.8	109	224	109	3.2	0.048 2	0.003 4	0.115 1	0.007 7	0.017 5	0.000 3
18022-09	68.90	552	1 157	0.453 7	324	3.8	800	74	365	12.7	0.065 8	0.002 4	0.477 8	0.019 6	0.051 5	0.000 6
18022-10	26.55	377	700	0.511 6	205	2.2	276	76	205	5.0	0.051 8	0.001 7	0.231 1	0.007 4	0.032 2	0.000 3
18022-11	7.29	417	236	1.643 0	116	1.8	1 544	93	139	3.3	0.095 8	0.004 7	0.238 8	0.011 0	0.018 2	0.000 3
18022-12	2.77	133	114	1.112 1	116	2.4	220	227	109	4.0	0.050 5	0.004 2	0.123 3	0.009 9	0.018 1	0.000 4
18022-13	2.88	144	114	1.179 4	112	2.4	833	179	133	9.5	0.066 5	0.005 7	0.160 3	0.013 7	0.017 6	0.000 4
18022-14	2.79	113	116	0.928 7	115	2.4	676	172	125	4.7	0.062 1	0.005 0	0.152 3	0.011 9	0.018 0	0.000 4
18022-15	22.45	318	400	0.778 3	286	3.3	483	96	289	6.7	0.056 8	0.002 5	0.356 9	0.015 4	0.045 4	0.000 5
18022-16	1.72	79	72	1.065 4	116	3.2	733	269	106	4.6	0.061 8	0.007 7	0.141 4	0.015 0	0.018 1	0.000 5
18022-17	2.34	114	92	1.196 5	112	2.4	922	244	126	4.8	0.069 5	0.008 0	0.166 8	0.019 6	0.017 6	0.000 4
18022-18	3.44	166	146	1.030 4	113	2.1	124	193	114	3.7	0.048 5	0.004 2	0.114 7	0.009 1	0.017 6	0.000 3
18022-19	3.60	230	133	1.555 5	111	2.3	483	152	112	3.4	0.056 8	0.003 9	0.134 0	0.008 5	0.017 3	0.000 4
18022-20	2.01	88	84	1.005 7	118	2.7	146	215	117	5.1	0.049 0	0.004 8	0.121 2	0.010 4	0.018 5	0.000 4
18022-21	2.22	87	92	0.892 3	121	2.6	235	274	129	5.9	0.050 9	0.006 6	0.121 4	0.010 0	0.019 0	0.000 4
18022-22	2.01	76	73	0.997 5	117	2.6	1 472	158	157	6.9	0.092 2	0.007 7	0.224 9	0.014 9	0.018 3	0.000 4
18022-23	119.67	45	733	0.057 7	907	7.7	1 161	75	2 480	152.3	0.078 5	0.001 7	1.652 1	0.037 8	0.151 0	0.001 4
18022-24	32.50	243	366	0.638 1	440	4.9	524	63	563	17.4	0.057 9	0.001 7	0.567 5	0.016 5	0.070 6	0.000 8
18022-25	14.63	175	385	0.442 6	208	2.1	272	83	222	7.3	0.051 7	0.001 9	0.234 9	0.008 2	0.032 8	0.000 3
18022-26	3.17	168	129	1.260 8	111	2.2	457	170	113	3.8	0.056 1	0.004 3	0.130 8	0.008 9	0.017 3	0.000 4
18022-27	1.70	62	73	0.839 3	118	2.1	283	236	114	5.5	0.052 0	0.005 4	0.125 8	0.010 8	0.018 4	0.000 3
18022-28	34.70	413	556	0.735 3	307	3.2	833	63	373	8.2	0.066 8	0.002 0	0.450 2	0.012 8	0.048 7	0.000 5
18022-29	30.10	392	533	0.714 5	291	2.9	283	72	292	7.3	0.052 0	0.001 6	0.333 2	0.010 5	0.046 1	0.000 5

测点	²⁰⁶Pb_t/ 10^-6	Th/ 10^-6	U/ 10^-6	²³²Th /²³⁸U	²⁰⁶Pb/²³⁸U 年龄/Ma	1σ	²⁰⁷Pb/²⁰⁶Pb 年龄/Ma	1σ	²⁰⁸Pb/²³²Th 年龄/Ma	1σ	²⁰⁷Pb^/²⁰⁶Pb^ 比值	1σ	²⁰⁷Pb^*/²³⁵U 比值	1σ	²⁰⁶Pb^*/²³⁸U 比值	1σ
17001-2-01	390	327	583	0.549 1	446	7.7	345	106	469	16.1	0.053 2	0.002 5	0.538 4	0.024 0	0.071 6	0.001 3
17001-2-02	509	352	518	0.688 5	195	5.7	2 948	107	575	38.0	0.215 6	0.014 3	0.956 5	0.075 2	0.030 7	0.000 9
17001-2-03	91	304	191	1.617 7	117	3.7	339	264	118	5.0	0.053 2	0.006 3	0.121 2	0.012 2	0.018 3	0.000 6
17001-2-04	104	312	207	1.539 2	121	5.3	306	348	129	8.3	0.052 4	0.009 0	0.129 1	0.016 9	0.019 0	0.000 8
17001-2-05	98	225	271	0.836 7	166	5.1	309	231	166	7.8	0.052 5	0.005 3	0.180 9	0.015 7	0.026 1	0.000 8
17001-2-06	31	40	59	0.676 9	137	7.0	2 595	268	245	30.6	0.173 8	0.027 6	0.388 5	0.050 8	0.021 5	0.001 1
17001-2-07	47	100	84	1.163 6	139	6.3	2 027	293	171	11.3	0.124 9	0.020 5	0.303 5	0.048 0	0.021 7	0.001 0
17001-2-08	55	184	134	1.381 9	113	4.4	295	278	108	6.5	0.052 2	0.007 0	0.117 7	0.013 5	0.017 7	0.000 7
17001-2-09	27	85	68	1.287 6	110	6.6	1 302	478	111	8.1	0.084 4	0.020 2	0.155 0	0.034 8	0.017 2	0.001 0
17001-2-10	40	118	117	1.045 8	109	6.0	33	372	119	9.4	0.046 5	0.008 4	0.112 5	0.018 0	0.017 1	0.000 9
17001-2-11	67	250	167	1.554 8	112	4.6	120	296	96	5.2	0.048 5	0.006 6	0.116 4	0.016 3	0.017 5	0.000 7
17001-2-12	66	204	161	1.268 0	116	5.0	1 133	319	115	5.7	0.074 9	0.011 7	0.173 3	0.023 5	0.018 1	0.000 8
17001-2-13	28	41	51	0.828 4	134	7.8	2 881	281	223	17.3	0.206 8	0.035 3	0.421 5	0.046 5	0.021 0	0.001 2
17001-2-14	42	156	123	1.303 8	119	5.3	433	383	97	6.7	0.055 3	0.011 0	0.126 2	0.022 1	0.018 6	0.000 8
17001-2-15	65	226	161	1.448 2	119	5.1	87	356	109	6.5	0.047 7	0.008 0	0.124 5	0.023 7	0.018 6	0.000 8
17001-2-16	25	85	84	1.049 3	129	6.9	1 524	550	109	7.1	0.094 7	0.026 7	0.134 6	0.033 9	0.020 2	0.001 1
17001-2-17	37	117	106	1.173 9	123	5.2	80	330	115	8.2	0.047 6	0.007 4	0.129 7	0.017 9	0.019 3	0.000 8
17001-2-18	59	211	154	1.429 9	123	5.6	456	361	111	7.5	0.055 9	0.010 5	0.130 0	0.027 9	0.019 2	0.000 9
17001-2-19	44	138	114	1.303 1	122	6.5	972	410	123	8.8	0.071 5	0.014 1	0.155 8	0.026 9	0.019 1	0.001 0
17001-2-20	150	259	432	0.656 4	228	6.9	139	270	217	14.6	0.048 8	0.006 1	0.238 0	0.025 7	0.036 0	0.001 1
17001-2-21	66	234	176	1.411 5	115	4.9	109	341	108	5.6	0.048 2	0.007 7	0.117 8	0.018 2	0.018 0	0.000 8
17001-2-22	29	90	90	1.048 1	115	5.5	1 276	333	126	9.0	0.083 3	0.014 0	0.167 5	0.027 4	0.017 9	0.000 9
17001-2-23	64	193	121	1.650 1	132	5.3	587	425	128	7.4	0.059 5	0.011 4	0.145 1	0.025 9	0.020 7	0.000 8
17001-2-24	57	215	160	1.403 7	120	3.8	189	272	102	5.5	0.049 7	0.006 5	0.132 2	0.014 5	0.018 8	0.000 6
17001-2-25	61	203	136	1.541 3	123	6.0	1 220	349	114	6.7	0.080 9	0.014 1	0.178 8	0.019 0	0.019 3	0.001 0
17001-2-26	70	251	158	1.644 3	107	4.3	1 106	347	107	5.6	0.076 4	0.013 2	0.144 3	0.020 0	0.016 7	0.000 7
17001-2-27	151	519	298	1.736 9	112	3.4	354	233	111	4.9	0.053 6	0.005 5	0.120 0	0.009 6	0.017 6	0.000 5
17001-2-28	131	384	240	1.637 0	120	4.2	1 013	225	130	6.6	0.073 0	0.008 0	0.192 1	0.020 2	0.018 7	0.000 7
17001-2-29	73	245	168	1.499 6	116	4.9	261	381	109	8.0	0.051 5	0.009 6	0.123 8	0.020 0	0.018 2	0.000 8
17001-2-30	67	231	152	1.528 1	110	4.6	467	302	107	7.2	0.054 8	0.010 0	0.111 5	0.014 4	0.017 3	0.000 7
17001-2-31	100	138	123	1.148 4	148	6.2	2 506	239	279	27.9	0.164 9	0.023 2	0.537 0	0.080 4	0.023 2	0.001 0
17001-2-32	40	126	110	1.188 1	114	5.8	280	422	112	9.6	0.051 9	0.010 9	0.121 9	0.034 3	0.017 8	0.000 9
17001-2-33	37	124	90	1.392 7	114	5.7	635	372	104	6.8	0.060 9	0.010 3	0.145 5	0.019 8	0.017 8	0.000 9
17001-2-34	70	149	118	1.256 4	123	4.7	2 106	212	169	10.3	0.130 5	0.015 7	0.314 5	0.034 1	0.019 3	0.000 7
17001-2-35	48	114	100	1.181 6	124	5.9	2 147	272	144	9.0	0.133 7	0.020 5	0.279 7	0.030 9	0.019 4	0.000 9
17001-2-36	36	128	107	1.250 8	112	5.0	367	356	99	8.1	0.053 7	0.009 4	0.122 4	0.021 6	0.017 6	0.000 8
17001-2-37	36	47.5	58	0.845 7	146	7.6	3 033	283	260	16.8	0.227 3	0.039 6	0.538 6	0.048 6	0.022 9	0.001 2
17001-2-38	50	129	101	1.257 3	122	6.1	1 533	313	153	10.6	0.095 3	0.015 6	0.244 0	0.041 0	0.019 0	0.001 0
17001-2-39	68	214	148	1.494 3	118	5.7	322	328	117	6.6	0.052 6	0.008 6	0.119 7	0.014 9	0.018 4	0.000 9

测点	²⁰⁶Pb_t/ 10^-6	Th/ 10^-6	U/ 10^-6	²³²Th /²³⁸U	²⁰⁶Pb/²³⁸U 年龄/Ma	1σ	²⁰⁷Pb/²⁰⁶Pb 年龄/Ma	1σ	²⁰⁸Pb/²³²Th 年龄/Ma	1σ	²⁰⁷Pb^/²⁰⁶Pb^ 比值	1σ	²⁰⁷Pb^*/²³⁵U 比值	1σ	²⁰⁶Pb^*/²³⁸U 比值	1σ
17001-2-01	390	327	583	0.549 1	446	7.7	345	106	469	16.1	0.053 2	0.002 5	0.538 4	0.024 0	0.071 6	0.001 3
17001-2-02	509	352	518	0.688 5	195	5.7	2 948	107	575	38.0	0.215 6	0.014 3	0.956 5	0.075 2	0.030 7	0.000 9
17001-2-03	91	304	191	1.617 7	117	3.7	339	264	118	5.0	0.053 2	0.006 3	0.121 2	0.012 2	0.018 3	0.000 6
17001-2-04	104	312	207	1.539 2	121	5.3	306	348	129	8.3	0.052 4	0.009 0	0.129 1	0.016 9	0.019 0	0.000 8
17001-2-05	98	225	271	0.836 7	166	5.1	309	231	166	7.8	0.052 5	0.005 3	0.180 9	0.015 7	0.026 1	0.000 8
17001-2-06	31	40	59	0.676 9	137	7.0	2 595	268	245	30.6	0.173 8	0.027 6	0.388 5	0.050 8	0.021 5	0.001 1
17001-2-07	47	100	84	1.163 6	139	6.3	2 027	293	171	11.3	0.124 9	0.020 5	0.303 5	0.048 0	0.021 7	0.001 0
17001-2-08	55	184	134	1.381 9	113	4.4	295	278	108	6.5	0.052 2	0.007 0	0.117 7	0.013 5	0.017 7	0.000 7
17001-2-09	27	85	68	1.287 6	110	6.6	1 302	478	111	8.1	0.084 4	0.020 2	0.155 0	0.034 8	0.017 2	0.001 0
17001-2-10	40	118	117	1.045 8	109	6.0	33	372	119	9.4	0.046 5	0.008 4	0.112 5	0.018 0	0.017 1	0.000 9
17001-2-11	67	250	167	1.554 8	112	4.6	120	296	96	5.2	0.048 5	0.006 6	0.116 4	0.016 3	0.017 5	0.000 7
17001-2-12	66	204	161	1.268 0	116	5.0	1 133	319	115	5.7	0.074 9	0.011 7	0.173 3	0.023 5	0.018 1	0.000 8
17001-2-13	28	41	51	0.828 4	134	7.8	2 881	281	223	17.3	0.206 8	0.035 3	0.421 5	0.046 5	0.021 0	0.001 2
17001-2-14	42	156	123	1.303 8	119	5.3	433	383	97	6.7	0.055 3	0.011 0	0.126 2	0.022 1	0.018 6	0.000 8
17001-2-15	65	226	161	1.448 2	119	5.1	87	356	109	6.5	0.047 7	0.008 0	0.124 5	0.023 7	0.018 6	0.000 8
17001-2-16	25	85	84	1.049 3	129	6.9	1 524	550	109	7.1	0.094 7	0.026 7	0.134 6	0.033 9	0.020 2	0.001 1
17001-2-17	37	117	106	1.173 9	123	5.2	80	330	115	8.2	0.047 6	0.007 4	0.129 7	0.017 9	0.019 3	0.000 8
17001-2-18	59	211	154	1.429 9	123	5.6	456	361	111	7.5	0.055 9	0.010 5	0.130 0	0.027 9	0.019 2	0.000 9
17001-2-19	44	138	114	1.303 1	122	6.5	972	410	123	8.8	0.071 5	0.014 1	0.155 8	0.026 9	0.019 1	0.001 0
17001-2-20	150	259	432	0.656 4	228	6.9	139	270	217	14.6	0.048 8	0.006 1	0.238 0	0.025 7	0.036 0	0.001 1
17001-2-21	66	234	176	1.411 5	115	4.9	109	341	108	5.6	0.048 2	0.007 7	0.117 8	0.018 2	0.018 0	0.000 8
17001-2-22	29	90	90	1.048 1	115	5.5	1 276	333	126	9.0	0.083 3	0.014 0	0.167 5	0.027 4	0.017 9	0.000 9
17001-2-23	64	193	121	1.650 1	132	5.3	587	425	128	7.4	0.059 5	0.011 4	0.145 1	0.025 9	0.020 7	0.000 8
17001-2-24	57	215	160	1.403 7	120	3.8	189	272	102	5.5	0.049 7	0.006 5	0.132 2	0.014 5	0.018 8	0.000 6
17001-2-25	61	203	136	1.541 3	123	6.0	1 220	349	114	6.7	0.080 9	0.014 1	0.178 8	0.019 0	0.019 3	0.001 0
17001-2-26	70	251	158	1.644 3	107	4.3	1 106	347	107	5.6	0.076 4	0.013 2	0.144 3	0.020 0	0.016 7	0.000 7
17001-2-27	151	519	298	1.736 9	112	3.4	354	233	111	4.9	0.053 6	0.005 5	0.120 0	0.009 6	0.017 6	0.000 5
17001-2-28	131	384	240	1.637 0	120	4.2	1 013	225	130	6.6	0.073 0	0.008 0	0.192 1	0.020 2	0.018 7	0.000 7
17001-2-29	73	245	168	1.499 6	116	4.9	261	381	109	8.0	0.051 5	0.009 6	0.123 8	0.020 0	0.018 2	0.000 8
17001-2-30	67	231	152	1.528 1	110	4.6	467	302	107	7.2	0.054 8	0.010 0	0.111 5	0.014 4	0.017 3	0.000 7
17001-2-31	100	138	123	1.148 4	148	6.2	2 506	239	279	27.9	0.164 9	0.023 2	0.537 0	0.080 4	0.023 2	0.001 0
17001-2-32	40	126	110	1.188 1	114	5.8	280	422	112	9.6	0.051 9	0.010 9	0.121 9	0.034 3	0.017 8	0.000 9
17001-2-33	37	124	90	1.392 7	114	5.7	635	372	104	6.8	0.060 9	0.010 3	0.145 5	0.019 8	0.017 8	0.000 9
17001-2-34	70	149	118	1.256 4	123	4.7	2 106	212	169	10.3	0.130 5	0.015 7	0.314 5	0.034 1	0.019 3	0.000 7
17001-2-35	48	114	100	1.181 6	124	5.9	2 147	272	144	9.0	0.133 7	0.020 5	0.279 7	0.030 9	0.019 4	0.000 9
17001-2-36	36	128	107	1.250 8	112	5.0	367	356	99	8.1	0.053 7	0.009 4	0.122 4	0.021 6	0.017 6	0.000 8
17001-2-37	36	47.5	58	0.845 7	146	7.6	3 033	283	260	16.8	0.227 3	0.039 6	0.538 6	0.048 6	0.022 9	0.001 2
17001-2-38	50	129	101	1.257 3	122	6.1	1 533	313	153	10.6	0.095 3	0.015 6	0.244 0	0.041 0	0.019 0	0.001 0
17001-2-39	68	214	148	1.494 3	118	5.7	322	328	117	6.6	0.052 6	0.008 6	0.119 7	0.014 9	0.018 4	0.000 9

岩石	样号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	FeO	MnO	MgO	CaO	Na₂O	K₂O	P₂O₅	H₂O⁺	H₂O^-	烧失量	总量	A/CNK	σ	DI	Na₂O/K₂O
闪长玢岩	17010-1	53.92	1.04	16.13	1.48	4.34	0.14	1.80	5.34	1.66	4.99	0.51	1.58	0.58	8.06	99.42	0.90	4.05	58.90	0.33
闪长玢岩	17001-2	58.36	0.92	16.08	1.98	3.51	0.23	1.73	4.30	0.40	3.63	0.39	3.32	0.60	8.26	99.78	1.29	1.06	59.49	0.11
闪长玢岩	18003-5	50.70	1.16	17.45	1.92	4.84	0.30	2.44	4.31	0.08	4.28	0.42	3.20	0.26	10.96	98.87	1.38	2.47	51.51	0.02
闪长玢岩	19003-2	60.78	1.41	16.94	2.20	5.16	0.07	1.87	1.05	0.13	4.44	0.72	0.94	0.39	4.22	98.98	2.44	1.17	68.25	0.03
二长闪长玢岩	18006-5	51.56	1.15	16.44	2.50	4.44	0.13	2.70	6.03	3.00	3.80	0.59	1.26	0.75	7.34	99.68	0.82	5.40	55.56	0.79
二长闪长玢岩	17003-2	48.00	1.03	18.01	2.00	5.11	0.11	3.49	6.95	3.00	3.22	0.49	3.00	0.08	8.08	99.49	0.85	7.74	48.64	0.93
辉长闪长玢岩	19003-6	49.60	1.42	16.43	2.19	5.77	0.21	2.78	4.50	0.05	5.10	0.72	1.98	0.49	10.02	98.79	1.19	4.02	51.00	0.01
辉长闪长玢岩	17011-4	49.64	1.61	18.73	2.06	6.38	0.13	4.01	3.86	0.34	4.68	0.80	3.86	0.96	6.88	99.12	1.48	3.80	48.34	0.07
安粗岩	18022	56.92	1.15	16.59	6.46	4.07	0.13	1.66	5.35	4.01	3.05	0.43	1.80	0.60	3.82	103.64	0.84	3.58	60.22	1.31
安山岩	18017-5	56.00	0.69	15.70	1.07	5.28	0.30	2.95	5.08	2.44	2.79	0.15	3.10	0.51	7.08	99.53	0.96	2.10	53.81	0.87
安山岩	18007-1	58.80	0.74	14.44	1.01	5.44	0.22	2.86	5.22	2.58	2.35	0.17	2.22	0.28	5.02	98.86	0.89	1.54	56.02	1.10
安山岩	17012-1	60.16	0.62	13.92	3.36	2.54	0.45	2.00	6.31	2.26	2.20	0.13	2.82	0.54	6.18	100.13	0.79	1.16	58.33	1.03
英安岩	18006-1	61.60	0.84	13.57	1.98	4.20	0.25	2.18	4.49	1.61	1.69	0.30	2.88	0.49	6.52	99.23	1.07	0.59	59.23	0.95