Identification and Significance of Early Cretaceous Highly Fractionated Alihe Granites, Northern Great Xing’an Range

doi:10.19657/j.geoscience.1000-8527.2021.053

Abstract

Abstract:

There are voluminous Mesozoic granitic rocks in the Great Xing’an Range. In this study, zircon U-Pb geochronology and geochemistry of the Alihe granites in the northern Great Xing’an Range were analyzed, and were compared with the Mesozoic granites in the northern, middle and southern Great Xing’an Range and South China. The petrogenesis and tectonic setting of the Alihe granites were then discussed. Zircon U-Pb dating on two granite samples yielded Early Cretaceous ages (134.6±1.5 Ma and 134.4±1.0 Ma). The Alihe granites are mainly composed of monzogranite, syenogranite, and alkali-feldspar granites, which contain few mafic mi-nerals and miarolitic cavities. Alaskite and aplite were found in the field investigation route and pegmatite veins were found on the granitic pluton margin. Chemically, these plutons are peraluminous (A/CNK=1.01-1.11) and show high contents of SiO₂ (73.63%-77.81%), alkalis (Na₂O+K₂O=7.78%-8.97%), and DI (91.71-96.80), and low Ca and Mg contents. They are also enriched in Rb, Th, U, K, but depleted in Nb, Ta, P, Ti. The varying Zr/Hf and Nb/Ta ratios resemble highly-fractionated granites in South China. Integrating geological and geochemical data, we suggested that the Alihe plutons are highly fractionated I-type granites, which were formed in a post-orogenic extension setting after the Mongolia-Okhotsk Ocean closure.

Key words: highly-fractionated granite, miarolitic cavity, Early Cretaceous, Alihe pluton

CLC Number:

XU Liming, LIU Tao, ZHENG Jilin. Identification and Significance of Early Cretaceous Highly Fractionated Alihe Granites, Northern Great Xing’an Range[J]. Geoscience, 2023, 37(03): 613-626.

Figures/Tables 12

References 71

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测点	Pb (10^-6)	U (10^-6)	Th/U	同位素比值						年龄(Ma)
测点	Pb (10^-6)	U (10^-6)	Th/U	²⁰⁶Pb/ ²³⁸U	±1σ	²⁰⁷Pb/ ²³⁵U	±1σ	²⁰⁷Pb/ ²⁰⁶Pb	±1σ	²⁰⁶Pb/ ²³⁸U	±1σ	²⁰⁷Pb/ ²³⁵U	±1σ	²⁰⁷Pb/ ²⁰⁶Pb	±1σ
Hb170248-1	3	130	0.87	0.0217	0.0002	0.1506	0.0093	0.0503	0.0030	139	2	142	9	207	137
Hb170248-2	3	107	0.64	0.0225	0.0002	0.1527	0.0095	0.0493	0.0033	143	2	144	9	163	154
Hb170248-3	4	154	0.73	0.0218	0.0002	0.1516	0.0062	0.0503	0.0020	139	1	143	6	211	93
Hb170248-4	4	160	0.64	0.0223	0.0002	0.1573	0.0057	0.0512	0.0018	142	1	148	5	252	83
Hb170248-5	4	190	0.56	0.0212	0.0002	0.1451	0.0109	0.0496	0.0036	135	1	138	10	178	168
Hb170248-6	3	129	0.67	0.0215	0.0002	0.1521	0.0102	0.0513	0.0034	137	1	144	10	256	154
Hb170248-7	7	290	0.61	0.0211	0.0002	0.1504	0.0047	0.0518	0.0015	134	1	142	4	277	68
Hb170248-8	8	343	0.62	0.0210	0.0002	0.1527	0.0053	0.0527	0.0018	134	1	144	5	318	79
Hb170248-9	3	117	0.70	0.0212	0.0002	0.1491	0.0146	0.0511	0.0049	135	2	141	14	246	219
Hb170248-10	7	290	0.67	0.0214	0.0002	0.1516	0.0058	0.0514	0.0019	137	1	143	5	257	85
Hb170248-11	4	190	0.69	0.0212	0.0002	0.1521	0.0045	0.0520	0.0015	135	1	144	4	284	67
Hb170248-12	5	241	0.74	0.0207	0.0002	0.1496	0.0042	0.0524	0.0014	132	1	142	4	302	61
Hb170248-13	4	154	0.63	0.0211	0.0002	0.1486	0.0062	0.0511	0.0020	135	1	141	6	246	92
Hb170248-14	7	286	0.88	0.0204	0.0002	0.1498	0.0038	0.0533	0.0013	130	1	142	4	343	55
Hb170248-15	6	268	0.47	0.0206	0.0002	0.1457	0.0048	0.0514	0.0016	131	1	138	5	260	73
Hb170248-16	1	49	0.65	0.0213	0.0003	0.1510	0.0211	0.0514	0.0069	136	2	143	20	259	308
Hb170248-17	3	140	0.64	0.0210	0.0002	0.1512	0.0074	0.0521	0.0025	134	1	143	7	291	109
Hb170248-18	5	223	0.72	0.0206	0.0002	0.1472	0.0082	0.0518	0.0028	132	1	139	8	276	124
Hb170248-19	4	158	0.57	0.0208	0.0002	0.1477	0.0063	0.0515	0.0022	133	1	140	6	264	98
Hb170248-20	6	275	0.47	0.0207	0.0002	0.1476	0.0040	0.0518	0.0013	132	1	140	4	277	59
Hb170248-21	6	266	0.49	0.0204	0.0002	0.1476	0.0053	0.0526	0.0018	130	1	140	5	310	80
Hb170248-22	5	240	0.65	0.0207	0.0002	0.1444	0.0052	0.0507	0.0018	132	1	137	5	226	82
Hb170248-23	3	114	0.56	0.0214	0.0002	0.1451	0.0087	0.0492	0.0029	136	2	138	8	157	138
Hb170249-1	6	214	1.12	0.0218	0.0002	0.1516	0.0074	0.0504	0.0025	139	1	143	7	212	114
Hb170249-2	8	341	0.64	0.0211	0.0002	0.1509	0.0039	0.0519	0.0013	135	1	143	4	281	59
Hb170249-3	9	374	0.72	0.0211	0.0002	0.1429	0.0048	0.0491	0.0016	135	2	136	5	152	79
Hb170249-4	3	129	0.52	0.0213	0.0002	0.1505	0.0103	0.0513	0.0035	136	1	142	10	253	157
Hb170249-5	7	275	0.88	0.0214	0.0002	0.1486	0.0038	0.0504	0.0012	137	1	141	4	212	57
Hb170249-6	3	140	0.99	0.0210	0.0002	0.1510	0.0082	0.0521	0.0027	134	1	143	8	288	118
Hb170249-7	5	200	1.34	0.0212	0.0002	0.1517	0.0042	0.0519	0.0014	135	1	143	4	283	62
Hb170249-8	4	154	0.87	0.0210	0.0002	0.1547	0.0057	0.0534	0.0019	134	1	146	5	345	81
Hb170249-9	6	123	0.00	0.0472	0.0005	0.4288	0.0097	0.0659	0.0014	297	3	362	8	802	43
Hb170249-10	5	203	0.66	0.0209	0.0002	0.1545	0.0073	0.0535	0.0025	134	1	146	7	350	106
Hb170249-11	2	88	1.02	0.0202	0.0002	0.1495	0.0161	0.0536	0.0057	129	2	141	15	354	239
Hb170249-12	5	238	0.54	0.0207	0.0002	0.1452	0.0043	0.0509	0.0014	132	1	138	4	238	66
Hb170249-13	3	134	0.78	0.0217	0.0002	0.1525	0.0160	0.0510	0.0052	138	2	144	15	240	233
Hb170249-14	6	240	0.52	0.0215	0.0002	0.1467	0.0058	0.0495	0.0020	137	2	139	6	172	93
Hb170249-15	4	184	0.77	0.0210	0.0002	0.1524	0.0051	0.0527	0.0017	134	1	144	5	315	72
Hb170249-16	0	0	0.00	0.0205	0.0002	0.1463	0.0048	0.0517	0.0017	131	1	139	5	270	74
Hb170249-17	2	92	0.60	0.0207	0.0002	0.1546	0.0112	0.0541	0.0040	132	1	146	11	376	167
Hb170249-18	3	64	0.00	0.0484	0.0005	0.3782	0.0152	0.0567	0.0022	305	3	326	13	480	87
Hb170249-19	3	119	0.70	0.0211	0.0002	0.1552	0.0073	0.0533	0.0024	135	2	147	7	344	101
Hb170249-20	4	177	0.61	0.0212	0.0002	0.1562	0.0058	0.0534	0.0019	135	1	147	5	347	82
Hb170249-21	6	266	1.00	0.0214	0.0002	0.1456	0.0038	0.0494	0.0013	136	1	138	4	167	59
Hb170249-22	3	146	0.59	0.0211	0.0002	0.1522	0.0081	0.0523	0.0028	135	1	144	8	300	121
Hb170249-23	3	114	0.70	0.0212	0.0002	0.1555	0.0119	0.0532	0.0040	135	1	147	11	339	171
Hb170249-24	6	263	0.86	0.0205	0.0002	0.1517	0.0070	0.0537	0.0023	131	1	143	7	357	96

测点	Pb (10^-6)	U (10^-6)	Th/U	同位素比值						年龄(Ma)
测点	Pb (10^-6)	U (10^-6)	Th/U	²⁰⁶Pb/ ²³⁸U	±1σ	²⁰⁷Pb/ ²³⁵U	±1σ	²⁰⁷Pb/ ²⁰⁶Pb	±1σ	²⁰⁶Pb/ ²³⁸U	±1σ	²⁰⁷Pb/ ²³⁵U	±1σ	²⁰⁷Pb/ ²⁰⁶Pb	±1σ
Hb170248-1	3	130	0.87	0.0217	0.0002	0.1506	0.0093	0.0503	0.0030	139	2	142	9	207	137
Hb170248-2	3	107	0.64	0.0225	0.0002	0.1527	0.0095	0.0493	0.0033	143	2	144	9	163	154
Hb170248-3	4	154	0.73	0.0218	0.0002	0.1516	0.0062	0.0503	0.0020	139	1	143	6	211	93
Hb170248-4	4	160	0.64	0.0223	0.0002	0.1573	0.0057	0.0512	0.0018	142	1	148	5	252	83
Hb170248-5	4	190	0.56	0.0212	0.0002	0.1451	0.0109	0.0496	0.0036	135	1	138	10	178	168
Hb170248-6	3	129	0.67	0.0215	0.0002	0.1521	0.0102	0.0513	0.0034	137	1	144	10	256	154
Hb170248-7	7	290	0.61	0.0211	0.0002	0.1504	0.0047	0.0518	0.0015	134	1	142	4	277	68
Hb170248-8	8	343	0.62	0.0210	0.0002	0.1527	0.0053	0.0527	0.0018	134	1	144	5	318	79
Hb170248-9	3	117	0.70	0.0212	0.0002	0.1491	0.0146	0.0511	0.0049	135	2	141	14	246	219
Hb170248-10	7	290	0.67	0.0214	0.0002	0.1516	0.0058	0.0514	0.0019	137	1	143	5	257	85
Hb170248-11	4	190	0.69	0.0212	0.0002	0.1521	0.0045	0.0520	0.0015	135	1	144	4	284	67
Hb170248-12	5	241	0.74	0.0207	0.0002	0.1496	0.0042	0.0524	0.0014	132	1	142	4	302	61
Hb170248-13	4	154	0.63	0.0211	0.0002	0.1486	0.0062	0.0511	0.0020	135	1	141	6	246	92
Hb170248-14	7	286	0.88	0.0204	0.0002	0.1498	0.0038	0.0533	0.0013	130	1	142	4	343	55
Hb170248-15	6	268	0.47	0.0206	0.0002	0.1457	0.0048	0.0514	0.0016	131	1	138	5	260	73
Hb170248-16	1	49	0.65	0.0213	0.0003	0.1510	0.0211	0.0514	0.0069	136	2	143	20	259	308
Hb170248-17	3	140	0.64	0.0210	0.0002	0.1512	0.0074	0.0521	0.0025	134	1	143	7	291	109
Hb170248-18	5	223	0.72	0.0206	0.0002	0.1472	0.0082	0.0518	0.0028	132	1	139	8	276	124
Hb170248-19	4	158	0.57	0.0208	0.0002	0.1477	0.0063	0.0515	0.0022	133	1	140	6	264	98
Hb170248-20	6	275	0.47	0.0207	0.0002	0.1476	0.0040	0.0518	0.0013	132	1	140	4	277	59
Hb170248-21	6	266	0.49	0.0204	0.0002	0.1476	0.0053	0.0526	0.0018	130	1	140	5	310	80
Hb170248-22	5	240	0.65	0.0207	0.0002	0.1444	0.0052	0.0507	0.0018	132	1	137	5	226	82
Hb170248-23	3	114	0.56	0.0214	0.0002	0.1451	0.0087	0.0492	0.0029	136	2	138	8	157	138
Hb170249-1	6	214	1.12	0.0218	0.0002	0.1516	0.0074	0.0504	0.0025	139	1	143	7	212	114
Hb170249-2	8	341	0.64	0.0211	0.0002	0.1509	0.0039	0.0519	0.0013	135	1	143	4	281	59
Hb170249-3	9	374	0.72	0.0211	0.0002	0.1429	0.0048	0.0491	0.0016	135	2	136	5	152	79
Hb170249-4	3	129	0.52	0.0213	0.0002	0.1505	0.0103	0.0513	0.0035	136	1	142	10	253	157
Hb170249-5	7	275	0.88	0.0214	0.0002	0.1486	0.0038	0.0504	0.0012	137	1	141	4	212	57
Hb170249-6	3	140	0.99	0.0210	0.0002	0.1510	0.0082	0.0521	0.0027	134	1	143	8	288	118
Hb170249-7	5	200	1.34	0.0212	0.0002	0.1517	0.0042	0.0519	0.0014	135	1	143	4	283	62
Hb170249-8	4	154	0.87	0.0210	0.0002	0.1547	0.0057	0.0534	0.0019	134	1	146	5	345	81
Hb170249-9	6	123	0.00	0.0472	0.0005	0.4288	0.0097	0.0659	0.0014	297	3	362	8	802	43
Hb170249-10	5	203	0.66	0.0209	0.0002	0.1545	0.0073	0.0535	0.0025	134	1	146	7	350	106
Hb170249-11	2	88	1.02	0.0202	0.0002	0.1495	0.0161	0.0536	0.0057	129	2	141	15	354	239
Hb170249-12	5	238	0.54	0.0207	0.0002	0.1452	0.0043	0.0509	0.0014	132	1	138	4	238	66
Hb170249-13	3	134	0.78	0.0217	0.0002	0.1525	0.0160	0.0510	0.0052	138	2	144	15	240	233
Hb170249-14	6	240	0.52	0.0215	0.0002	0.1467	0.0058	0.0495	0.0020	137	2	139	6	172	93
Hb170249-15	4	184	0.77	0.0210	0.0002	0.1524	0.0051	0.0527	0.0017	134	1	144	5	315	72
Hb170249-16	0	0	0.00	0.0205	0.0002	0.1463	0.0048	0.0517	0.0017	131	1	139	5	270	74
Hb170249-17	2	92	0.60	0.0207	0.0002	0.1546	0.0112	0.0541	0.0040	132	1	146	11	376	167
Hb170249-18	3	64	0.00	0.0484	0.0005	0.3782	0.0152	0.0567	0.0022	305	3	326	13	480	87
Hb170249-19	3	119	0.70	0.0211	0.0002	0.1552	0.0073	0.0533	0.0024	135	2	147	7	344	101
Hb170249-20	4	177	0.61	0.0212	0.0002	0.1562	0.0058	0.0534	0.0019	135	1	147	5	347	82
Hb170249-21	6	266	1.00	0.0214	0.0002	0.1456	0.0038	0.0494	0.0013	136	1	138	4	167	59
Hb170249-22	3	146	0.59	0.0211	0.0002	0.1522	0.0081	0.0523	0.0028	135	1	144	8	300	121
Hb170249-23	3	114	0.70	0.0212	0.0002	0.1555	0.0119	0.0532	0.0040	135	1	147	11	339	171
Hb170249-24	6	263	0.86	0.0205	0.0002	0.1517	0.0070	0.0537	0.0023	131	1	143	7	357	96

样品号	Hb170230	Hb170246	Hb170249	Hb170264	WJE078	Hb170234	Hb170263		Hb170229		Hb170248	Hb170265
岩性	中粗粒黑云母正长花岗岩	似斑状细中粒正长花岗岩	细中粒正长花岗岩	中细粒正长花岗岩	似斑状细粒碱长花岗岩	似斑状中细粒黑云母二长花岗岩	中粗粒花岗岩		似斑状细中粒二长花岗岩		细中粒黑云母二长花岗岩	细中粒二长花岗岩
SiO₂	76.22	73.63	75.60	77.81	74.58	74.41	74.11	74.09		75.45		76.70
Al₂O₃	12.66	14.03	13.25	12.26	13.54	13.64	13.80	13.90		13.29		12.71
TiO₂	0.21	0.21	0.13	0.10	0.19	0.22	0.22	0.23		0.13		0.12
Fe₂O₃	0.83	0.85	0.58	0.41	0.88	0.89	0.87	0.78		0.59		0.50
FeO	0.42	0.42	0.33	0.19	0.45	0.49	0.44	0.53		0.30		0.29
CaO	0.80	0.88	0.36	0.38	0.36	0.98	0.76	1.02		0.59		0.54
MgO	0.40	0.38	0.22	0.14	0.40	0.49	0.37	0.45		0.24		0.21
K₂O	3.58	4.31	4.45	4.22	4.36	3.55	4.25	3.92		4.41		4.15
Na₂O	4.20	4.55	4.53	4.12	4.11	4.61	4.38	4.39		4.44		4.30
MnO	0.053	0.064	0.071	0.051	0.060	0.060	0.046	0.034		0.067		0.056
P₂O₅	0.058	0.057	0.031	0.018	0.070	0.068	0.062	0.069		0.036		0.041
H₂O⁺	0.36	0.30	0.24	0.14	0.63	0.37	0.45	0.31		0.15		0.14
H₂O^-	0.22	0.16	0.17	0.17	0.41	0.18	0.24	0.30		0.16		0.16
烧失量	0.47	0.51	0.36	0.24	0.87	0.47	0.55	0.45		0.36		0.30
总量	99.91	99.89	99.92	99.94	99.87	99.89	99.88	99.87		99.91		99.92
Mg^#	37.97	36.62	32.16	31.36	36.51	40.48	35.28	39.60		33.91		34.29
DI	93.16	92.92	96.21	96.80	94.33	91.90	93.17	91.71		95.30		95.73
A/CNK	1.03	1.02	1.02	1.02	1.11	1.03	1.04	1.04		1.01		1.01
A/NK	1.17	1.15	1.08	1.08	1.18	1.19	1.17	1.21		1.10		1.10
σ	1.82	2.56	2.47	2.00	2.27	2.12	2.39	2.22		2.42		2.12
K₂O/Na₂O	0.85	0.95	0.98	1.02	1.06	0.77	0.97	0.89		0.99		0.97
FeO^T/MgO	2.94	3.12	3.80	3.94	3.13	2.65	3.30	2.75		3.51		3.45
K₂O+Na₂O	7.78	8.86	8.97	8.34	8.47	8.17	8.63	8.31		8.85		8.46
(K₂O+Na₂O) /CaO	9.70	10.03	24.64	22.08	23.69	8.35	11.33	8.11		15.12		15.80
Sc	1.51	2.25	2.03	1.01	1.57	2.04	1.23	1.18		1.14		1.13
V	11.90	12.60	5.78	2.37	12.40	15.10	12.30	15.30		5.27		4.02
Cr	2.80	2.41	1.52	1.69	4.29	4.20	1.65	4.63		1.86		2.25
Co	1.61	2.13	0.79	0.38	2.99	2.42	1.80	2.10		0.76		0.77
Ni	0.77	1.58	0.33	0.58	2.41	2.79	0.62	2.35		0.66		0.77
Ga	16.7	18.3	17.7	13.7	14.9	16.6	17.7	18.0		16.6		14.9
Rb	100	138	117	112	108	112	108	128		114		104
Sr	198.0	241.0	102.0	47.9	214.0	273.0	193.0	345.0		105.0		87.1
Zr	73.7	67.5	80.5	99.5	85.7	72.3	102.0	91.0		62.5		79.0
Nb	10.20	12.30	13.20	13.00	9.64	10.20	10.40	8.86		12.30		11.20
Cs	2.17	2.55	2.38	2.21	2.53	3.84	2.43	4.08		2.43		2.61
Ba	452	522	386	223	591	445	648	586		472		314
Hf	2.54	3.10	3.39	4.18	3.14	3.02	3.51	3.49		2.95		2.92
Ta	0.82	0.98	0.83	0.94	0.85	0.88	0.78	0.72		0.89		0.75
Pb	22.4	28.1	26.8	26.3	16.7	27.0	20.7	27.6		28.0		24.0
Th	15.70	15.90	11.80	8.60	10.20	15.10	10.30	15.50		8.91		7.60
U	1.94	2.52	2.50	2.66	1.71	2.27	2.53	3.09		2.65		1.71
Y	10.20	9.39	13.80	7.63	6.49	7.00	12.40	4.25		13.50		11.50
La	37.1	29.1	22.9	13.6	17.3	21.4	22.8	19.3		19.2		16.8
Ce	56.9	45.9	44.4	31.3	33.0	36.1	46.3	36.9		38.6		32.7
Pr	5.67	4.71	5.23	3.12	3.49	3.98	5.57	2.71		4.76		4.06
Nd	17.4	14.3	16.8	10.1	11.7	12.5	18.5	8.3		16.1		13.7
Sm	2.75	2.29	3.05	1.81	1.74	2.07	3.10	1.27		3.09		2.50
Eu	0.56	0.53	0.45	0.26	0.44	0.54	0.63	0.47		0.55		0.40
Gd	2.38	1.89	2.38	1.51	1.61	1.67	2.42	1.16		2.43		1.93
Tb	0.33	0.28	0.39	0.23	0.22	0.23	0.36	0.15		0.41		0.31
Dy	1.68	1.42	2.15	1.34	1.18	1.16	1.93	0.73		2.39		1.75
Ho	0.31	0.27	0.41	0.26	0.22	0.21	0.36	0.14		0.43		0.34
Er	0.98	0.90	1.29	0.81	0.68	0.70	1.11	0.43		1.36		1.02
Tm	0.18	0.17	0.23	0.15	0.13	0.13	0.20	0.08		0.25		0.18
Yb	1.19	1.24	1.56	0.93	0.92	0.94	1.32	0.60		1.53		1.14
Lu	0.19	0.22	0.25	0.15	0.14	0.17	0.21	0.11		0.25		0.17
Zr/Hf	23.90	29.00	11.34	21.17	27.10	28.99	21.75	23.75		23.77		27.30
Nb/Ta	11.60	13.28	74.63	13.75	14.84	12.39	12.54	15.89		13.80		11.31
Rb/Sr	0.41	0.56	0.26	1.08	1.19	0.51	0.58	1.15		2.34		0.50
10000Ga/Al	2.49	2.47	2.52	2.11	2.08	2.30	2.42	2.45		2.35		2.21
(La/Yb)_N	21.07	15.89	9.91	9.82	12.75	15.31	11.68	21.79		8.48		9.96
δEu	0.66	0.78	0.51	0.48	0.80	0.89	0.70	1.18		0.62		0.55
Kfs	48	50	52	52	70	35	45	40		40		42
Pl	20	20	22	18	3	30	25	32		32		30
Q	27	26	22	28	27	30	28	25		23		25
Bt	5	4	2	2	<1	5	2	3		5		3

样品号	Hb170230	Hb170246	Hb170249	Hb170264	WJE078	Hb170234	Hb170263		Hb170229		Hb170248	Hb170265
岩性	中粗粒黑云母正长花岗岩	似斑状细中粒正长花岗岩	细中粒正长花岗岩	中细粒正长花岗岩	似斑状细粒碱长花岗岩	似斑状中细粒黑云母二长花岗岩	中粗粒花岗岩		似斑状细中粒二长花岗岩		细中粒黑云母二长花岗岩	细中粒二长花岗岩
SiO₂	76.22	73.63	75.60	77.81	74.58	74.41	74.11	74.09		75.45		76.70
Al₂O₃	12.66	14.03	13.25	12.26	13.54	13.64	13.80	13.90		13.29		12.71
TiO₂	0.21	0.21	0.13	0.10	0.19	0.22	0.22	0.23		0.13		0.12
Fe₂O₃	0.83	0.85	0.58	0.41	0.88	0.89	0.87	0.78		0.59		0.50
FeO	0.42	0.42	0.33	0.19	0.45	0.49	0.44	0.53		0.30		0.29
CaO	0.80	0.88	0.36	0.38	0.36	0.98	0.76	1.02		0.59		0.54
MgO	0.40	0.38	0.22	0.14	0.40	0.49	0.37	0.45		0.24		0.21
K₂O	3.58	4.31	4.45	4.22	4.36	3.55	4.25	3.92		4.41		4.15
Na₂O	4.20	4.55	4.53	4.12	4.11	4.61	4.38	4.39		4.44		4.30
MnO	0.053	0.064	0.071	0.051	0.060	0.060	0.046	0.034		0.067		0.056
P₂O₅	0.058	0.057	0.031	0.018	0.070	0.068	0.062	0.069		0.036		0.041
H₂O⁺	0.36	0.30	0.24	0.14	0.63	0.37	0.45	0.31		0.15		0.14
H₂O^-	0.22	0.16	0.17	0.17	0.41	0.18	0.24	0.30		0.16		0.16
烧失量	0.47	0.51	0.36	0.24	0.87	0.47	0.55	0.45		0.36		0.30
总量	99.91	99.89	99.92	99.94	99.87	99.89	99.88	99.87		99.91		99.92
Mg^#	37.97	36.62	32.16	31.36	36.51	40.48	35.28	39.60		33.91		34.29
DI	93.16	92.92	96.21	96.80	94.33	91.90	93.17	91.71		95.30		95.73
A/CNK	1.03	1.02	1.02	1.02	1.11	1.03	1.04	1.04		1.01		1.01
A/NK	1.17	1.15	1.08	1.08	1.18	1.19	1.17	1.21		1.10		1.10
σ	1.82	2.56	2.47	2.00	2.27	2.12	2.39	2.22		2.42		2.12
K₂O/Na₂O	0.85	0.95	0.98	1.02	1.06	0.77	0.97	0.89		0.99		0.97
FeO^T/MgO	2.94	3.12	3.80	3.94	3.13	2.65	3.30	2.75		3.51		3.45
K₂O+Na₂O	7.78	8.86	8.97	8.34	8.47	8.17	8.63	8.31		8.85		8.46
(K₂O+Na₂O) /CaO	9.70	10.03	24.64	22.08	23.69	8.35	11.33	8.11		15.12		15.80
Sc	1.51	2.25	2.03	1.01	1.57	2.04	1.23	1.18		1.14		1.13
V	11.90	12.60	5.78	2.37	12.40	15.10	12.30	15.30		5.27		4.02
Cr	2.80	2.41	1.52	1.69	4.29	4.20	1.65	4.63		1.86		2.25
Co	1.61	2.13	0.79	0.38	2.99	2.42	1.80	2.10		0.76		0.77
Ni	0.77	1.58	0.33	0.58	2.41	2.79	0.62	2.35		0.66		0.77
Ga	16.7	18.3	17.7	13.7	14.9	16.6	17.7	18.0		16.6		14.9
Rb	100	138	117	112	108	112	108	128		114		104
Sr	198.0	241.0	102.0	47.9	214.0	273.0	193.0	345.0		105.0		87.1
Zr	73.7	67.5	80.5	99.5	85.7	72.3	102.0	91.0		62.5		79.0
Nb	10.20	12.30	13.20	13.00	9.64	10.20	10.40	8.86		12.30		11.20
Cs	2.17	2.55	2.38	2.21	2.53	3.84	2.43	4.08		2.43		2.61
Ba	452	522	386	223	591	445	648	586		472		314
Hf	2.54	3.10	3.39	4.18	3.14	3.02	3.51	3.49		2.95		2.92
Ta	0.82	0.98	0.83	0.94	0.85	0.88	0.78	0.72		0.89		0.75
Pb	22.4	28.1	26.8	26.3	16.7	27.0	20.7	27.6		28.0		24.0
Th	15.70	15.90	11.80	8.60	10.20	15.10	10.30	15.50		8.91		7.60
U	1.94	2.52	2.50	2.66	1.71	2.27	2.53	3.09		2.65		1.71
Y	10.20	9.39	13.80	7.63	6.49	7.00	12.40	4.25		13.50		11.50
La	37.1	29.1	22.9	13.6	17.3	21.4	22.8	19.3		19.2		16.8
Ce	56.9	45.9	44.4	31.3	33.0	36.1	46.3	36.9		38.6		32.7
Pr	5.67	4.71	5.23	3.12	3.49	3.98	5.57	2.71		4.76		4.06
Nd	17.4	14.3	16.8	10.1	11.7	12.5	18.5	8.3		16.1		13.7
Sm	2.75	2.29	3.05	1.81	1.74	2.07	3.10	1.27		3.09		2.50
Eu	0.56	0.53	0.45	0.26	0.44	0.54	0.63	0.47		0.55		0.40
Gd	2.38	1.89	2.38	1.51	1.61	1.67	2.42	1.16		2.43		1.93
Tb	0.33	0.28	0.39	0.23	0.22	0.23	0.36	0.15		0.41		0.31
Dy	1.68	1.42	2.15	1.34	1.18	1.16	1.93	0.73		2.39		1.75
Ho	0.31	0.27	0.41	0.26	0.22	0.21	0.36	0.14		0.43		0.34
Er	0.98	0.90	1.29	0.81	0.68	0.70	1.11	0.43		1.36		1.02
Tm	0.18	0.17	0.23	0.15	0.13	0.13	0.20	0.08		0.25		0.18
Yb	1.19	1.24	1.56	0.93	0.92	0.94	1.32	0.60		1.53		1.14
Lu	0.19	0.22	0.25	0.15	0.14	0.17	0.21	0.11		0.25		0.17
Zr/Hf	23.90	29.00	11.34	21.17	27.10	28.99	21.75	23.75		23.77		27.30
Nb/Ta	11.60	13.28	74.63	13.75	14.84	12.39	12.54	15.89		13.80		11.31
Rb/Sr	0.41	0.56	0.26	1.08	1.19	0.51	0.58	1.15		2.34		0.50
10000Ga/Al	2.49	2.47	2.52	2.11	2.08	2.30	2.42	2.45		2.35		2.21
(La/Yb)_N	21.07	15.89	9.91	9.82	12.75	15.31	11.68	21.79		8.48		9.96
δEu	0.66	0.78	0.51	0.48	0.80	0.89	0.70	1.18		0.62		0.55
Kfs	48	50	52	52	70	35	45	40		40		42
Pl	20	20	22	18	3	30	25	32		32		30
Q	27	26	22	28	27	30	28	25		23		25
Bt	5	4	2	2	<1	5	2	3		5		3